ἔπερος
From LSJ
ποταμῷ γὰρ οὐκ ἔστιν ἐμβῆναι δὶς τῷ αὐτῷ → it is impossible to step twice in the same river, you cannot step twice into the same rivers
English (LSJ)
ον,
A woolly, of sheep, Schwyzer644.15 (Lydia).
Greek (Liddell-Scott)
ἔπερος: ὁ, κριός, ἔπεροι καὶ ἀρνήαδες ἐρίων ἀτέλεες Ἐπιγρ. Αἰολ. (Αἰγ.) Et. Gr. IV. σ. 268 = Hoffmann, GD. II. 155a.
Frisk Etymological English
Grammatical information: m.
Meaning: ram (Aeol, Asia Minor,Schryzer 644, 15).
Origin: IE [Indo-European]X [probably] [1170?] *u̯eru̯-os wool
Etymology: Not with Meillet Rev. d. ét. slav. 5, 9 to κάπρος, Lat. aper usw.; also not with Mastrelli Stud. itfilclass. 27, 1ff. to ἐπέρτερα μείζω, καὶ ὑψηλότερα H., Alb. epërë what is on high. DELG translates who has wool, and connects εἶρος. See εἶρος.
See also: s. εἶρος.