The Proto-Indo-European word *néh₂-u-
Word *néh₂-u-
Meaning swim
Synonyms *pleu-, *snehₐ, *swem-

Comments
néH₂-u- "ship": Skr. nāu, Ir. nau/, Gk. naus, Lat. nāvis, Av. navāza, Pers. nāviyā/nav, Arm. nav, ON nōr, Osset. nau, Alb. anije, Welsh noe, Eng. nōwend/--