Liddell-Scott-Jones

πλωτός (plōtos) afloat ^G:A

πλωτός-ός, ή, όν,

also ός, όν [Refs 1st c.BC+]:—epithet of the island of Aeolus, [Refs 8th c.BC+] floating; νῆσος π. floating island, [πλωτόςὴν εἶναι.. ὥσπερ ξύλον 4th c.BC: Aristoteles Philosophus “de Caelo” 294a30 ">Refs 5th c.BC+]; π. ἀπήναισι χαλκεμβόλοις floating wains, i.e. ships, [Refs]; of fish, swimming, ἰχθύων π. γένος [πλωτόςοί “Anthologia Graeca” 6.14 (Antip. Sid.), 23,296 (1st c.AD: Leonidas Alexandrinus Epigrammaticus)">Refs 6th c.BC+]; πλωτόςαὶ ἄγραι fishing,[Refs 1st c.BC+]; π. ἐγχέλεις, so called because they float on the surface, [Refs 2nd c.AD+]; muraenae, [Refs]; but π. ζῷα water-animals generally, [Refs 5th c.BC+]; opposed to πεζά, πτηνά, [Refs 4th c.BC+]; τὰ π., of migratory fishes, opposed to τὰ μόνιμα, [Refs]; also of water-birds,[Refs]

__II navigable, ἐς θάλασσαν οὐκέτι πλωτόςὴν ὑπὸ βραχέων [Refs 5th c.BC+]; to be passed over in ships, opposed to πορευτός, [Refs 3rd c.BC+]; μήτε γῆν καρπὸν φέρειν μήτε θάλασσαν πλωτόςὴν εἶναι, formula in curses, [Refs 2nd c.AD+]
__II.2 of seasons, fit for navigation, [Refs 2nd c.BC+] substantive πλωτόςός (i.e. καιρός), ὁ, the season for sailing, π. καὶ ἀροτοῦ [Refs 1st c.AD+]