1.  greek(n = noun.communication) hellenic, hellenic language - the Hellenic branch of the Indo-European family of languages;
is a kind of indo-european, indo-european language, indo-hittite
has particulars: modern greek, new greek, late greek, byzantine greek, medieval greek, middle greek, koine, ancient greek
Derived form adjective greek₁

2.  greek(n = noun.person) hellene - a native or inhabitant of Greece;
is a kind of european
is a member of ellas, greece, hellenic republic
has particulars: achaean, achaian, aeolian, eolian, dorian, ionian, athenian, corinthian, laconian, lesbian, spartan, arcadian, theban, argive, ephesian, mycenaen, thessalian, thessalonian
Derived forms adjective grecian₁, adjective greek₁

   greek(a = adj.pert) grecian, hellenic - of or relating to or characteristic of Greece or the Greeks or the Greek language; "Greek mythology"; "a Grecian robe"
Derived forms noun greek₁, noun greek₂

   Of or pertaining to Greece or the Greeks; Grecian. [1913 Webster]

1.  A native, or one of the people, of Greece; a Grecian; also, the language of Greece. [1913 Webster]

2.  A swindler; a knave; a cheat. [1913 Webster]
"Without a confederate the . . . game of baccarat does not . . . offer many chances for the Greek." [1913 Webster]

3.  Something unintelligible; as, it was all Greek to me. [1913 Webster]

greek, n. & adj.
--n.
1 a a native or national of modern Greece; a person of Greek descent. b a native or citizen of any of the ancient States of Greece; a member of the Greek people.
2 the Indo-European language of Greece.
--adj. of Greece or its people or language; Hellenic.

Idiom:
Greek (or Greek Orthodox) Church the national Church of Greece (see also Orthodox Church). Greek cross a cross with four equal arms. Greek fire hist. a combustible composition for igniting enemy ships etc. Greek to me colloq. incomprehensible to me.

Derivative:
Greekness n.

Etymology:
OE Grecas (pl.) f. Gmc f. L Graecus Greek f. Gk Graikoi, the prehistoric name of the Hellenes (in Aristotle)

N  thief, robber, homo triumliterarum, pilferer, rifler, filcher, plagiarist, spoiler, depredator, pillager, marauder, harpy, shark, land shark, falcon, mosstrooper, bushranger, Bedouin, brigand, freebooter, bandit, thug, dacoit, pirate, corsair, viking, Paul Jones, buccaneer, buccanier, piqueerer, pickeerer, rover, ranger, privateer, filibuster, rapparee, wrecker, picaroon, smuggler, poacher, abductor, badger, bunko man, cattle thief, chor, contrabandist, crook, hawk, holdup man, hold-up, jackleg, kidnaper, rustler, cattle rustler, sandbagger, sea king, skin, sneak thief, spieler, strong-arm man, highwayman, Dick Turpin, Claude Duval, Macheath, footpad, sturdy beggar, cut purse, pick purse, pickpocket, light-fingered gentry, sharper, card sharper, skittle sharper, thimblerigger, rook, Greek, blackleg, leg, welsher, defaulter, Autolycus, Jeremy Diddler, Robert Macaire, artful dodger, trickster, swell mob, chevalier d'industrie, shoplifter, swindler, peculator, forger, coiner, fence, receiver of stolen goods, duffer, smasher, burglar, housebreaker, cracksman, magsman, Bill Sikes, Jack Sheppard, Jonathan Wild, gang, gang of thieves, theft ring, organized crime, mafia, the Sicilian Mafia, the mob, la cosa nostra, Dillinger, Al Capone, Robin Hood.

N  unintelligibility, incomprehensibility, imperspicuity, inconceivableness, vagueness, obscurity, ambiguity, doubtful meaning, uncertainty, perplexity, spinosity, obscurum per obscurius, mystification, latency, transcendentalism, paradox, oxymoron, riddle, enigma, puzzle, diagnus vindice nodus, sealed book, steganography, freemasonry, pons asinorum, asses' bridge, high Dutch, Greek, Hebrew, jargon, unintelligible, unaccountable, undecipherable, undiscoverable, unknowable, unfathomable, incognizable, inexplicable, inscrutable, inapprehensible, incomprehensible, insolvable, insoluble, impenetrable, illegible, as Greek to one, unexplained, paradoxical, enigmatic, enigmatical, puzzling (secret), indecipherable, obscure, dark, muddy, clear as mud, seen through a mist, dim, nebulous, shrouded in mystery, opaque, dense, undiscernible, misty, hidden, latent, indefinite, garbled, perplexed, undetermined, vague, loose, ambiguous, mysterious, mystic, mystical, acroamatic, acroamatical, metempirical, transcendental, occult, recondite, abstruse, crabbed, inconceivable, inconceptible, searchless, above comprehension, beyond comprehension, past comprehension, beyond one's depth, unconceived, inexpressible, undefinable, incommunicable, unpredictable, unforeseeable, it's Greek to me.

ancient greek, byzantine greek, classical greek, greek alphabet, greek architecture, greek calendar, greek calends, greek capital, greek catholic, greek chorus, greek church, greek clover, greek cross, greek deity, greek drachma, greek fire, greek fret, greek kalends, greek key, greek mode, greek monetary unit, greek mythology, greek orthodox, greek orthodox church, greek partridge, greek valerian, late greek, medieval greek, middle greek, modern greek, new greek, war of greek independence