water-bus

[waw-ter-buhs, wot-er-]

noun, plural wa·ter-bus·es, wa·ter-bus·ses.

vaporetto.
any small ship or boat serving as a passenger shuttle.

Origin of water-bus

First recorded in 1925–30

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018