Dictionary entry

πλοῖον

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament

πλοῖον, -ου, τό

(< πλέω), [in LXX chiefly for אֳנִיָּה;]

a boat, also (= obsol. ναῦς) a ship: Mt 4:21, 22, and freq. in Gosp. and Ac, Ja 3:4, Re 8:918:19.