Lewis & Short

gaulus, i, m. [Sanscr. gōlas, a waterpot; cf. also galley, galleon], = γαυλός,

  1. I. a pail, round vessel, Plaut. Rud. 5, 2, 32.
  2. II. A round merchant vessel, = Gr. γαῦλος (Hdt. 3, 136 sq.): genus navigii paene rotundum, Paul. ex Fest. p. 96 Müll.; cf. Gell. 10, 25, 5.