Lexical Definition

‎λύκος‎ lýkos (loo'-kos) wolf ^G:N-M
perhaps akin to the base of ‎λευκός‎ (from the whitish hair)

wolf.

• a wolf

Abbott-Smith

λύκος, -ου, ὁ, [in LXX for זְאֵב;]
a wolf: Mt 10:16, Lk 10:3, Jo 10:12; fig. (as Ez 22:27, Ze 3:3, Je 5:6, al.), Mt 7:1, Ac 20:29.†

Abbott-Smith References

Liddell-Scott-Jones

λύκος [ῠ], ὁ,

wolf, [Refs 8th c.BC+]; πολιός grisly,[Refs 8th c.BC+]; ὀρέστεροι[Refs 8th c.BC+]; the small Egyptian wolves mentioned by [Refs 5th c.BC+] were perhaps jackals: various kinds distinguished by [Refs 3rd c.AD+] to see a wolf, i. e. to be struck dumb, as was vulgarly believed of any one at whom a wolf got the first look [Refs 5th c.BC+]; λύκου πτερά, of things that are not, 'pigeon's milk', [Refs]; ὡς λ. χανών, of vain expectation, [Refs 5th c.BC+]; πρίν κεν λ. οἶν ὑμεναιοῖ, of an impossibility, [Refs 8th c.BC+]; ὡς λύκοι ἄρν᾽ ἀγαπῶσιν, of treacherous or unnatural love, poetical cited in [Refs 5th c.BC+]; λύκου βίον ζῆν, i. e. live by rapine, Prov. cited in [Refs 2nd c.BC+]; ἐκ λύκου στόματος, of getting a thing praeter spem, [Refs 2nd c.AD+]; τῶν ὤτων ἔχειν τὸν λύκον 'catch a Tartar', [Refs 4th c.BC+]; λ. ἀετὸν φεύγει, of the inescapable, [Refs 4th c.AD+]

__II a kind of daw, [Refs 4th c.BC+]; compare λύκιος.
__III a fish, ={καλλιώνυμος}, [Refs 1st c.BC+]
__IV a kind of spider, [Refs 4th c.BC+]
__V anything shaped like a hook:
__V.1 a jagged bit for hard-mouthed horses, Latin lupus, [Refs 1st c.AD+]; compare λυκοσπάς.
__V.2 hook or knocker on a door, [Refs 5th c.AD+]
__V.3 flesh-hook, [Refs 2nd c.AD+]
__VI nickname of παιδερασταί, [Refs 5th c.BC+]
__VII the flower of the iris, Philin. cited in [Refs 2nd c.AD+]
__VIII a kind of noose, [Refs 2nd c.AD+]
__IX a pastille used in dysentery, [Refs 6th c.AD+]
__X ={ὀροβάγχη}, variant in marginal of [Refs 1st c.AD+]
__XI an engine of war for defending gates, [Refs 6th c.AD+]. (Cf. Sanskrit vŕ[null]kas, Lithuanian vi[ltilde]kas, Slavonic vl[ucaron]k[ucaron], Gothic wulfs.)