Lexical Definition

‎θρίξ‎ thríx (threeks) hair ^G:N-F
genitive case , etc.

hair.

• of uncertain derivation
• hair

Abbott-Smith

θρίξ, τριχός, ἡ, [in LXX chiefly for שֵׂעָר;]
hair;
(a) of the head: Mt 3:4 5:36 10:30, Lk 7:38, 44 12:7 21:18, Jo 11:2 12:3, Ac 27:34, I Pe 3:3, Re 1:14;
(b) of animals: Mk 1:6, Re 9:8.†

Abbott-Smith References

Liddell-Scott-Jones

θρίξ, ἡ,

genitive τρῐχός, dative plural θριξί (τρίχεσιν [Refs 1st c.AD+]: - hair, [Refs 8th c.BC+] only in plural, ὀρθαὶ τρίχες ἔσταν ἐνὶ.. μέλεσσι [Refs 8th c.BC+]; mostly, hair of the head,[Refs 8th c.BC+]; sheep's wool, [Refs 8th c.BC+]; pig's bristles, [Refs 8th c.BC+]; τρίχες ἄκραι οὐραῖαι, of a horse's tail, [Refs 8th c.BC+]; ἀνάστασις τῶν τριχῶν, of a lark's crest, [Refs 2nd c.AD+]

__II later in singular collectively, [Refs 5th c.BC+]; τριχὸς πλόκαμος, βόστρυχος, [θρίξ [prev. author] “Pers.” 1056; κόμη θρίξ LXX.Num.6.6 ">LXX+4th c.BC+]; Ἐπαφρόδιτον.. τὴν παιδικὴν τρίχα Ὑγίᾳ (i.e. ἀνέθηκεν) [Refs 1st c.AD+]; of a horse's mane, [Refs 5th c.BC+]; of dogs, [Refs 5th c.BC+]
__II.2 a single hair, οὐδὲ τρίχ[α] [Refs 7th c.BC+] only a hair's breadth wanting, [Refs 5th c.BC+]; ἄξιον τριχός, i.e. good for nothing, [Refs 5th c.BC+]; ἐκ τριχὸς κρέμασθαι to hang by a hair, [Refs 2nd c.AD+]; εἰς ἱερὴν τρίχα ἐλθεῖν, i.e. to come to life's end, variant in [Refs]; μόνον οὐχὶ τῶν τ., φασί, λαμβάνεται 'saute aux yeux', [Refs 2nd c.AD+]
__III in Medicine texts, vein on the right lobe of the liver, [Refs 5th c.BC+]

_{LSJ Scripture Refs: LXX.Num.6.6}