I.to sail, go by sea, Hom., etc.; c. acc. cogn., ὑγρὰ κέλευθα πλεῖν to sail the watery ways, Od.; hence in Pass., τὸ πεπλευσμένον πέλαγος Xen.;—metaph., πλεῖν ὑφειμένηι cf. ὑφίημι 111.
II.of ships, Il., Hdt., etc.
2.of other things, to swim, float, Hom., etc.