weathercock(n = noun.artifact) - weathervane with a vane in the form of a rooster;
is a kind of vane, weather vane, weathervane, wind vane

1.  A vane, or weather vane; -- so called because originally often in the figure of a cock, turning on the top of a spire with the wind, and showing its direction. Chaucer. [1913 Webster]
"Noisy weathercocks rattled and sang of mutation." [1913 Webster]

2.  Hence, any thing or person that turns easily and frequently; one who veers with every change of current opinion; a fickle, inconstant person. [1913 Webster]

   To supply with a weathercock; to serve as a weathercock for. [1913 Webster]
"Whose blazing wyvern weathercock the spire." [1913 Webster]

weathercock, n.
1 a weather-vane (see VANE) in the form of a cock.
2 an inconstant person.

N  tergiversation, change of mind, change of intention, change of purpose, afterthought, tergiversation, recantation, palinode, palinody, renunciation, abjuration, abjurement, defection, going over, apostasy, retraction, retractation, withdrawal, disavowal, revocation, revokement, reversal, repentance, redintegratio amoris, coquetry, vacillation, backsliding, volte-face, turn coat, turn tippet, rat, apostate, renegade, convert, pervert, proselyte, deserter, backslider, blackleg, crawfish, scab, mugwump, recidivist, time server, time pleaser, timist, Vicar of Bray, trimmer, ambidexter, weathercock, Janus, changeful, irresolute, ductile, slippery as an eel, trimming, ambidextrous, timeserving, coquetting, revocatory, reactionary, a change came o'er the spirit of my dream.

N  changeableness, mutability, inconstancy, versatility, mobility, instability, unstable equilibrium, vacillation, fluctuation, vicissitude, alternation, restlessness, fidgets, disquiet, disquietude, inquietude, unrest, agitation, moon, Proteus, chameleon, quicksilver, shifting sands, weathercock, harlequin, Cynthia of the minute, April showers, wheel of Fortune, transientness, changeable, changeful, changing, mutable, variable, checkered, ever changing, protean, proteiform, versatile, unstaid, inconstant, unsteady, unstable, unfixed, unsettled, fluctuating, restless, agitated, erratic, fickle, irresolute, capricious, touch and go, inconsonant, fitful, spasmodic, vibratory, vagrant, wayward, desultory, afloat, alternating, alterable, plastic, mobile, transient, wavering, seesaw, off and on, a rolling stone gathers no moss, pictra mossa non fa muschis, honores mutant mores, varium et mutabile semper femina.

N  wind, draught, flatus, afflatus, efflation, eluvium, air, breath, breath of air, puff, whiff, zephyr, blow, breeze, drift, aura, stream, current, jet stream, undercurrent, gust, blast, squall, gale, half a gale, storm, tempest, hurricane, whirlwind, tornado, samiel, cyclone, anticyclone, typhoon, simoon, simoom, harmattan, monsoon, trade wind, sirocco, mistral, bise, tramontane, levanter, capful of wind, fresh breeze, stiff breeze, keen blast, blizzard, barber, candelia, chinook, foehn, khamsin, norther, vendaval, wuther, windiness, ventosity, rough weather, dirty weather, ugly weather, stress of weather, dirty sky, mare's tail, thick squall, black squall, white squall, anemography, aerodynamics, wind gauge, weathercock, vane, weather- vane, wind sock, anemometer, anemoscope, sufflation, insufflation, perflation, inflation, afflation, blowing, fanning, ventilation, sneezing, errhine, sternutative, sternutatory, sternutation, hiccup, hiccough, catching of the breath, Eolus, Boreas, Zephyr, cave of Eolus, air pump, air blower, lungs, bellows, blowpipe, fan, ventilator, punkah, branchiae, gills, flabellum, vertilabrum, whiffle ball, blowing, windy, flatulent, breezy, gusty, squally, stormy, tempestuous, blustering, boisterous, pulmonic, pulmonary, lull'd by soft zephyrs, the storm is up and all is on the hazard, the winds were wither'd in the stagnant air, while mocking winds are piping loud, winged with red lightning and tempestuous rage.

N  indication, symbolism, symbolization, semiology, semiotics, semeiology, semeiotics, Zeitgeist, characteristic, diagnostic, lineament, feature, trait, fingerprint, voiceprint, footprint, noseprint, cloven hoof, footfall, recognition (memory), diagnostic, divining rod, detector, sign, symbol, index, indice, indicator, point, pointer, exponent, note, token, symptom, dollar sign, dollar mark, type, figure, emblem, cipher, device, representation, epigraph, motto, posy, gesture, gesticulation, pantomime, wink, glance, leer, nod, shrug, beck, touch, nudge, dactylology, dactylonomy, freemasonry, telegraphy, chirology, byplay, dumb show, cue, hint, clue, clew, key, scent, signal, signal post, rocket, blue light, watch fire, watch tower, telegraph, semaphore, flagstaff, cresset, fiery cross, calumet, heliograph, guidon, headlight, mark, scratch, line, stroke, dash, score, stripe, streak, tick, dot, point, notch, nick, print, imprint, impress, impression, keyboard symbols, printing symbols, red letter, italics, sublineation, underlining, bold font, jotting, note, annotation, reference, blaze, cedilla, guillemets, hachure, quotation marks, ", double quotes, " ", parentheses, "( )", brackets, "", braces, "", left arrow, "<", right arrow, ">", forward slash, "/", backward slash, "\", exclamation point, "!", commercial at, "@", pound sign, "#", percent sign, "%", carat, "", ampersand, "&", asterisk, "*", hyphen, "-", dash, "-", "_", em dash, "--", plus sign, "+", equals sign, "=", question mark, "?", period, ", ", semicolon, ", ", colon, ":", comma, ", ", apostrophe, "'", single quote, "'", tilde, "~", badge, criterion, countercheck, countermark, countersign, counterfoil, duplicate, tally, label, ticket, billet, letter, counter, check, chip, chop, dib, totem, tessera, card, bill, witness, voucher, stamp, cacher, trade mark, Hall mark, signature, mark, autograph, autography, attestation, hand, hand writing, sign manual, cipher, seal, sigil, signet, hand and seal, paraph, brand, superscription, indorsement, endorsement, password, watchword, catchword, security card, pass, passkey, credentials, open sesame, timbrology, mot de passe, mot du guet, pass-parole, shibboleth, title, heading, docket, address card, visiting card, carte de visite, insignia, banner, banneret, bannerol, bandrol, flag, colors, streamer, standard, eagle, labarum, oriflamb, oriflamme, figurehead, ensign, pennon, pennant, pendant, burgee, blue Peter, jack, ancient, gonfalon, union jack, banderole, old glory, quarantine flag, vexillum, yellow-flag, yellow jack, tricolor, stars and stripes, bunting, heraldry, crest, coat of arms, arms, armorial bearings, hatchment, escutcheon, scutcheon, shield, supporters, livery, uniform, cockade, epaulet, chevron, garland, love knot, favor, beacon, cairn, post, staff, flagstaff, hand, pointer, vane, cock, weathercock, guidepost, handpost, fingerpost, directing post, signpost, pillars of Hercules, pharos, bale-fire, beacon-fire, l'etoile du Nord, landmark, seamark, lighthouse, balize, polestar, loadstar, lodestar, cynosure, guide, address, direction, name, sign, signboard, warning, omen, prefigurement, trace, record, warning &c, alarm, scepter, trophy, gauge, milestone, milepost, brand, fool's cap, check, telltale, test, mileage ticket, milliary, notification, advertisement, word of command, call, bugle call, trumpet call, bell, alarum, cry, battle cry, rallying cry, angelus, reveille, sacring bell, sanctus bell, exposition &c (explanation), proof, pattern, indicating, indicative, indicatory, denotative, connotative, diacritical, representative, typical, symbolic, pantomimic, pathognomonic, symptomatic, characteristic, demonstrative, diagnostic, exponential, emblematic, armorial, individual, known by, recognizable by, indicated, pointed, marked, denotable, indelible, in token of, symbolically, in dumb show, ecce signum, ex ungue leonem, ex pede Herculem, vide ut supra, vultus ariete fortior.