1.  musician(n = noun.person) instrumentalist, player - someone who plays a musical instrument (as a profession);
is a kind of performer, performing artist
is a member of musical group, musical organisation, musical organization
has particulars: accompanist, accompanyist, accordionist, bandsman, bassist, bassoonist, bell ringer, carillonneur, cellist, violoncellist, clarinetist, clarinettist, flautist, flute player, flutist, gambist, guitar player, guitarist, harmoniser, harmonizer, harper, harpist, harpsichordist, hornist, jazz musician, jazzman, keyboardist, koto player, lutanist, lutenist, lutist, oboist, organist, percussionist, pianist, piano player, bagpiper, piper, recorder player, rhythm and blues musician, rock 'n' roll musician, rocker, saxist, saxophonist, singer, vocaliser, vocalist, vocalizer, sitar player, soloist, trombone player, trombonist, cornetist, trumpeter, vibist, vibraphonist, fiddler, violinist, violist
Derived forms noun music₃, noun music₄, noun music₁, noun musicianship₁

2.  musician(n = noun.person) - artist who composes or conducts music as a profession;
is a kind of artist, creative person
has particulars: adapter, arranger, transcriber, cantor, choirmaster, precentor, composer, conductor, director, music director, virtuoso, herbert, victor herbert, ono, yoko ono, carl orff, orff
Derived forms noun music₃, noun music₄, noun music₁, noun musicianship₁

   One skilled in the art or science of music; esp., a skilled singer, or performer on a musical instrument. [1913 Webster]

musician, n. a person who plays a musical instrument, esp. professionally, or is otherwise musically gifted.

Derivative:
musicianly adj. musicianship n.

Etymology:
ME f. OF musicien f. musique (as MUSIC, -ICIAN)

N  amusement, entertainment, recreation, fun, game, fun and games, diversion, divertissement, reaction, solace, pastime, passetemps, sport, labor of love, pleasure, relaxation, leisure, fun, frolic, merriment, jollity, joviality, jovialness, heyday, laughter, jocosity, jocoseness, drollery, buffoonery, tomfoolery, mummery, pleasantry, wit, quip, quirk, giggle, titter, snigger, snicker, crow, cheer, chuckle, shout, horse laugh, belly laugh, hearty laugh, guffaw, burst of laughter, fit of laughter, shout of laughter, roar of laughter, peal of laughter, cachinnation, Kentish fire, tiger, play, game, game at romps, gambol, romp, prank, antic, rig, lark, spree, skylarking, vagary, monkey trick, gambade, fredaine, escapade, echappee, bout, espieglerie, practical joke, dance, hop, reel, rigadoon, saraband, hornpipe, bolero, ballroom dance, minuet, waltz, polka, fox trot, tango, samba, rhumba, twist, stroll, hustle, cha-cha, fandango, cancan, bayadere, breakdown, cake-walk, cornwallis, break dancing, nautch-girl, shindig, skirtdance, stag dance, Virginia reel, square dance, galop, galopade, jig, Irish jig, fling, strathspey, allemande, gavot, gavotte, tarantella, mazurka, morisco, morris dance, quadrille, country dance, folk dance, cotillon, Sir Roger de Coverley, ballet, ball, bal, bal masque, bal costume, masquerade, Terpsichore, festivity, merrymaking, party, blowout, hullabaloo, hoedown, bat, bum, bust, clambake, donation party, fish fry, jamboree, kantikoy, nautch, randy, squantum, tear, Turnerfest, yule log, fete, festival, gala, ridotto, revels, revelry, reveling, carnival, brawl, saturnalia, high jinks, feast, banquet, regale, symposium, wassail, carouse, carousal, jollification, junket, wake, Irish wake, picnic, fete champetre, regatta, field day, treat, round of pleasures, dissipation, a short life and a merry one, racketing, holiday making, rejoicing, jubilee, bonfire, fireworks, feu-de-joie, firecracker, holiday, gala day, red letter day, play day, high days and holidays, high holiday, Bank holiday, May day, Derby day, Saint Monday, Easter Monday, Whit Monday, Bairam, wayz-goos, bean feast, Arbor Day, Declaration Day, Independence Day, Labor Day, Memorial Day, Thanksgiving Day, Mardi gras, mi-careme, feria, fiesta, place of amusement, theater, hall, concert room, ballroom, assemblyroom, music hall, park, plaisance, national park, national forest, state park, county park, city park, vest-pocket park, public park (public), arbor, garden, pleasure ground, playground, cricketground, croquet ground, archery ground, hunting ground, tennis court, racket court, bowling alley, green alley, croquet lawn, rink, glaciarum, skating rink, roundabout, merry-go-round, swing, montagne Russe, game of chance, game of skill, athletic sports, gymnastics, archery, rifle shooting, tournament, pugilism, sports, horse racing, the turf, aquatics, skating, sliding, cricket, tennis, lawn tennis, hockey, football, baseball, soccer, ice hockey, basketball, rackets, fives, trap bat and ball, battledore and shuttlecock, la grace, pall- mall, tipcat, croquet, golf, curling, pallone, polo, water polo, tent pegging, tilting at the ring, quintain, greasy pole, quoits, horseshoes, discus, rounders, lacrosse, tobogganing, water polo, knurr and spell, leapfrog, hop skip and jump, mother may I, French and English, tug of war, blindman's bluff, hunt the slopper, hide and seek, kiss in the ring, snapdragon, cross questions and crooked answers, crisscross, hopscotch, jacks, jackstones, marbles, mumblety-peg, mumble-the-peg, pushball, shinney, shinny, tag, billiards, pool, pingpong, pyramids, bagatelle, bowls, skittles, ninepins, kain, American bowls, tenpins, tivoli, cards, card games, whist, rubber, round game, loo, cribbage, besique, euchre, drole, ecarte, picquet, allfours, quadrille, omber, reverse, Pope Joan, commit, boston, boaston, blackjack, twenty- one, vingtun, quinze, thirty-one, put, speculation, connections, brag, cassino, lottery, commerce, snip-snap-snoren, lift smoke, blind hookey, Polish bank, Earl of Coventry, Napoleon, patience, pairs, banker, blind poker, draw poker, straight poker, stud poker, bluff, bridge, bridge whist, lotto, monte, three-card monte, nap, penny-ante, poker, reversis, squeezers, old maid, fright, beggar-my- neighbor, baccarat, ace, king, queen, knave, jack, ten, nine, eight, seven, six, five, four, trey, deuce, joker, trump, wild card, spades, hearts, clubs, diamonds, major suit, minor suit, bower, right bower, left bower, dummy, jackpot, deck, pair, two pair, three of a kind, straight, flush, full-house, four of a kind, royal flush, misere chess, draughts, checkers, checquers, backgammon, dominos, merelles, nine men's morris, go bang, solitaire, game of fox and goose, monopoly, loto, scrabble, scribbage, boggle, crossword puzzle, hangman, morra, gambling, toy, plaything, bauble, doll, teetotum, knickknack, magic lantern, peep show, puppet show, raree show, gallanty show, toy shop, quips and cranks and wanton wiles, nods and becks and wreathed smiles, entertainer, showman, showgirl, dancer, tap dancer, song-and-dance man, vaudeville act, singer, musician, sportsman, gamester, reveler, master of ceremonies, master of revels, pompom girl, arbiter elegantiarum, arbiter bibendi, archer, fan, toxophilite, turfman, amusing, entertaining, diverting, recreational, recreative, lusory, pleasant, laughable, witty, fun, festive, festal, jovial, jolly, jocund, roguish, rompish, playful, playful as a kitten, sportive, ludibrious, funny, very funny, hilarious, uproarious, side-splitting, amused, pleased with a rattle, tickled with a straw, laughing, risible, ready to burst, ready to split, ready to die with laughter, convulsed with laughter, rolling in the aisles, on the light fantastic toe, at play, in sport, Int, vive la bagatelle!, vogue la galere!, deus nobis haec otia fecit, dum vivimus vivamus, dulce est desipere in loco, (every room) hath blazed with lights and brayed wi, misce stullitiam consiliis brevem.

N  music, concert, strain, tune, air, melody, aria, arietta, piece of music, work, number, opus, sonata, rondo, rondeau, pastorale, cavatina, roulade, fantasia, concerto, overture, symphony, variations, cadenza, cadence, fugue, canon, quodlibet, serenade, notturno, dithyramb, opera, operetta, oratorio, composition, movement, stave, passamezzo, toccata, Vorspiel, instrumental music, full score, minstrelsy, tweedledum and tweedledee, band, orchestra, concerted piece, potpourri, capriccio, vocal music, vocalism, chaunt, chant, psalm, psalmody, hymn, song, canticle, canzonet, cantata, bravura, lay, ballad, ditty, carol, pastoral, recitative, recitativo, solfeggio, Lydian measures, slow music, slow movement, adagio, minuet, siren strains, soft music, lullaby, dump, dirge, pibroch, martial music, march, dance music, waltz, solo, duet, duo, trio, quartet, quartett, septett, part song, descant, glee, madrigal, catch, round, chorus, chorale, antiphon, antiphony, accompaniment, second, bass, score, bourdon, drone, morceau, terzetto, composer, musician, musical, instrumental, vocal, choral, lyric, operatic, harmonious, Wagnerian, adagio, largo, larghetto, andante, andantino, alla capella, maestoso, moderato, allegro, allegretto, spiritoso, vivace, veloce, presto, prestissimo, con brio, capriccioso, scherzo, scherzando, legato, staccato, crescendo, diminuendo, rallentando, affettuoso, obbligato, pizzicato, desto, in notes by distance made more sweet, like the faint exquisite music of a dream, music arose with its voluptuous swell, music is the universal language of mankind, music's golden tongue, the speech of angels, will sing the savageness out of a bear, music hath charms to soothe the savage beast.

N  musician, artiste, performer, player, minstrel, bard, accompanist, accordionist, instrumentalist, organist, pianist, violinist, flautist, harper, fiddler, fifer, trumpeter, piper, drummer, catgut scraper, band, orchestral waits, vocalist, melodist, singer, warbler, songster, chaunter, chauntress, songstress, cantatrice, choir, quire, chorister, chorus, chorus singer, liedertafel, nightingale, philomel, thrush, siren, bulbul, mavis, Pierides, sacred nine, Orpheus, Apollo, the Muses Erato, Euterpe, Terpsichore, tuneful nine, tuneful quire, composer, performance, execution, touch, expression, solmization, playing, musical, adagio, andante.

jazz musician, rhythm and blues musician, rock 'n' roll musician