Quick Definition
κύων, κυνός, ὁ, ἡ n.m. a dog
Strong's Definition
a primary word; a dog ("hound") (literally or figuratively)
KJV Usage: dog
UBS Dictionary of the Greek New Testament
noun, m. | κυνός · dat.pl. κυσί | κυνάριον
4.34 · Animals · Animals
dog relatively small light brown domestic animal, feeding on anything from household refuse to animal carcasses and excreta; Canis familiaris putiatini; associated with all sorts of uncleanness, aggression, greediness, low status In Greek outside the NT κύων may be either masculine or feminine and in the plural may refer to both male and female dogs.
88.122 · Moral and Ethical Qualities and Related Behavior · Bad, Evil, Harmful, Damaging
bad person, dog (a figurative extension of meaning of κύων[a] ‘dog,’ 4.34) a particularly bad person, perhaps specifically one who ridicules what is holy It is also possible that κύων in PHP 3:2 may be interpreted as meaning ‘pervert’ (see 88.282).
A term for ‘dog’ may have quite a different connotation than it does in English. For example, to call a person ‘a dog’ in some languages is to compliment him for his faithfulness, but in other languages it may be merely a way of attributing promiscuous sexual behavior.
88.282 · Moral and Ethical Qualities and Related Behavior · Sexual Misbehavior
pervert (a figurative extension of meaning of κύων[a] ‘dog,’ 4.34) one who is a sexual pervert or possibly one who is sexually promiscuous It is also possible, however, that in REV 22:15 κύων means ‘a wicked person’ who might have complete contempt for what is holy, a meaning which parallels the significance of the adage in MAT 7:6 (see 88.122).
UBS Dictionary of the Greek New Testament © United Bible Societies, licensed CC BY-SA 4.0.
Thayer's Greek Lexicon
κύων, κυνός ; in prof. auth. of the com. gend., in the N. T. mase.; Hebr. 253; a dog; prop.: Lk. xvi. 21; 2 Pet. ii. 22; metaph. (in various [but always reproachful] senses; often so even in Hom.) a man of impure mind, an impudent man, [ef. Bp. Lghtft. on Phil. 1. 5.1: Mt. vii. 6; Phil. iii. 2: Rev. xxii. 15, in which last pass. others less probably understand sodomites (like 0392 in Deut. xxiii. 18 (19)) [ef. B. D. s. v. Dog].
Mounce Concise Greek Dictionary
κύων kyōn 5x
a dog, Mt. 7:6; Lk. 16:21; 2 Pet. 2:22; met. a dog, a religious corrupter, Phil. 3:2; miscreant, Rev. 22:15*
Abbott-Smith Greek Lexicon
κύων, κυνός, ὁ, ἡ
(in NT masc. only), [in LXX forכֶּלֶב;]
a dog: Lk 16:21, II Pe 2:22; metaph., as a word of reproach, Mt 7:6, Phl 3:2, Re 22:15.†
Moulton & Milligan — Vocabulary of the Greek NT
κύων. The metaph. usage of κύων as a term of reproach (cf. Mt 7°, Phil 35, Rev 22") may be illustrated from the letter of a soldier, who writes to his mother complaining that she has abandoned him ‘‘as a dog” —BGU III. 814!® (iii/a.p.) ἀφῆκές [μοι οὕ]τῳ[9] ὡς κύων (/. κύνα).
Liddell-Scott-Jones — Greek-English Lexicon
κύων (kuōn) — dog. κύων [ῠ], ὁ and ἡ, both in [Refs 8th c.BC+], vocative κύον [Refs 8th c.BC+], Epic dialect κύνεσσι [Refs]:—dog, bitch, [Refs 8th c.BC+]; of shepherds' dogs, [Refs 8th c.BC+]; watch-dogs, [Refs]; but in [Refs 8th c.BC+] more frequently of hounds, [Refs 8th c.BC+]; later, when of hounds, mostly in feminine, [Refs 5th c.BC+]; Μολοττικαὶ κ. Alexis Hist. cited in [Refs 5th c.BC+] 'not fit for a dog', [Refs 4th c.BC+]; κύνα δέρειν δεδαρμένην 'flog a dead horse', [Refs 5th c.BC+]; ἡ κ. κατακειμένη ἐν τῇ φάτνῃ 'dog in the manger', [Refs 2nd c.AD+]; χαλεπὸν χορίω κύνα γεῦσαι it's ill to let a dog 'taste blood', [Refs 3rd c.BC+]; νή or μὰ τὸν κύνα was a favourite oath of Socrates, [Refs 5th c.BC+]; used familiarly at Athens, [Refs 5th c.BC+]; οἷς ἦν μέγιστος ὅρκος.. κύων, ἔπειτα χήν· θεοὺς δ᾽ ἐσίγων, of primitive men, [Refs 5th c.BC+]
II. as a word of reproach, frequently in [Refs 8th c.BC+] of women, to denote shamelessness or audacity; applied by Helen to herself, [Refs 8th c.BC+]: of the maids in the house of Odysseus, [Refs 8th c.BC+]: later, in a coarse sense, [Refs 5th c.BC+]; ἡ ῥαψῳδὸς κ., of the Sphinx, [Refs 5th c.BC+]; of men, κακαὶ κ. [Refs 8th c.BC+]; also of offensive persons, compared to yapping dogs, [LXX+NT]; κ. λαίθαργος, ={λαθροδήκτης}, metaphorically, of a person, [NT+5th c.BC+]
II.2. metaphorically, of persons, watch-dog, guardian, τῶν σταθμῶν κ., of Agamemnon, [Refs 4th c.BC+]; δωμάτων κ., of Clytemnestra,[Refs 5th c.BC+]
II.3. of the Cynics, ἀρέσκει τούτοις κυνῶν μεταμφιέννυσθαι βίον [Refs 1st c.BC+]: hence, Cynic philosopher, [Refs 4th c.BC+], Baillet Inscriptions des tombeaux des rois [Refs]
III. frequently in Mythology of the servants, agents or watchers of the gods, Διὸς πτηνὸς κύων, of the eagle, [Refs 5th c.BC+]; of the griffins, Ζηνὸς ἀκραγεῖς κ. [Refs 4th c.BC+]; of the Furies, μετάδρομοι.. πανουργημάτων ἄφυκτοι κ. [Refs 5th c.BC+]; Pan is the κύων of Cybele, [Refs 5th c.BC+], of the planets, [Refs 4th c.BC+], of sparks, [Refs 2nd c.AD+]; of various mythical beings, as Cerberus, κ. Ἀΐδαο [Refs 8th c.BC+]; of Hecate, in Mithraic worship, [Refs 3rd c.AD+]; of the Βάκχαι, Λύσσας κ. [Refs 5th c.BC+]; Λέρνας κ., of the hydra, [Refs]; of a great fish, Τρίτωνος κ. [Refs 3rd c.BC+]
IV. dog-fish or shark, [Refs 8th c.BC+]; κ. ἄγριος, κ. γαλεός and κ. κεντρίτης or κεντρίνη, [Refs 2nd c.AD+]; ξιφίας κ., of the sword-fish, [Refs 4th c.BC+]
V. = {σείριος} (which see), dog-star, i.e. the hound of Orion, [Refs 8th c.BC+]; μετὰ κυνὸς ἐπιτολήν, περὶ κ. ἐ., [Refs 4th c.BC+]; also of the whole constellation, [Refs 4th c.BC+]
VI. the ace, the worst throw at dice, [Refs 2nd c.AD+]
VII. frenum praeputii, [Refs 2nd c.AD+]: with pun on the proverbial cited in Pherecr. [prev. cited] (above [Refs 5th c.BC+]: with pun on significationsee, [Refs]
VIII. fetlock of a horse, [Refs]
IX. unilateral facial paralysis, [Refs 2nd c.AD+]
X. ={ἀπομαγδαλία}, [Refs 1st c.AD+]
XI. ξυλίνη κ., ={κυνόσβατος}, Oracle texts cited in Did cited in [Refs 2nd c.AD+]
XII. piece in the game of πόλεις, [Refs 5th c.BC+]. (Cf. Sanskrit śvā, genitive śúnas, Lithuanian šuõ, genitive šuñs, Latin canis, Gothic hunds (κύων), etc.)