κολύμβησις
From LSJ
Ζῆν οὐκ ἄξιος, ὅτῳ μηδὲ εἷς ἐστι χρηστὸς φίλος → Life is not worth living if you do not have at least one friend.
English (LSJ)
εως, ἡ, pearl-fishery, Peripl.M.Rubr.35 (pl.), 58, Sch.Ptol.Geog.6.7.11.
German (Pape)
[Seite 1476] ἡ, das Untertauchen, Schwimmen, Sp.
Greek (Liddell-Scott)
κολύμβησις: -εως, ἡ, κολύμβημα, Ἀρρ. Περίπλ. 175, Πτολ.