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water-bus

[waw-ter-buhs, wot-er-]
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noun, plural wa·ter-bus·es, wa·ter-bus·ses.
  1. vaporetto.
  2. 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