ICEBOAT
\ˈa͡ɪsbə͡ʊt], \ˈaɪsbəʊt], \ˈaɪ_s_b_əʊ_t]\
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a sailing vessel with runners and a cross-shaped frame; suitable for traveling over ice
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a ship with a reinforced bow to break up ice and keep channels open for navigation
By Princeton University