Definitions for iceboatˈaɪsˌboʊt
Random House Webster's College Dictionary
a vehicle for rapid movement on ice, usu. consisting of aT-shaped frame on runners propelled by sails.
Ref: icebreaker (def. 1). 1
Origin of iceboat:
a ship with a reinforced bow to break up ice and keep channels open for navigation
iceboat, ice yacht, scooter(noun)
a sailing vessel with runners and a cross-shaped frame; suitable for traveling over ice
An ice yacht.
An icebreaker; a ship that breaks through ice.