a small over-snow vehicle equipped with skis at the front and powered by a motor driving a treaded endless track. [See picture at motor toboggan]
See also: autoboggan motorized sled motorized toboggan power toboggan skidoo ski-scooter snow-bug snow-buggy Snow Cruiser snowmobile (def. 2) snow scooter toboggan ((n.)) (def. 5) ski-sled