Strong's G5140 · Greek

τρεῖς

treis

tria tree'-ah a primary (plural) number; "three"

Scholarly Lexicons

Abbott-Smith Manual Greek Lexicon

 68 τρεῖς , οἱ, αἱ, τρία, τά three : Mt 12:40 , al.; μετὰ τ. ἡμέρας = τῇ τρίτῃ ἡ. , Mk 10:34 , al. (cf. Field, Notes , 11 ff.) 

G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922) — public domain