iceboat

[ ahys-boht ]
/ ˈaɪsˌboʊt /

noun

a vehicle for rapid movement on ice, usually consisting of a T-shaped frame on three runners driven by a fore-and-aft sailing rig or, sometimes, by an engine operating a propeller.
a boat for breaking a navigable channel through ice; icebreaker.

Origin of iceboat

First recorded in 1745–55; ice + boat
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for iceboat

iceboat

/ (ˈaɪsˌbəʊt) /

noun

another name for icebreaker (def. 1), ice yacht
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012