bobsled

noun

1. a long sled made of two short sleds joined together, or either of the short sleds
2. a long sled for two or four riders, equipped with steerable runners in the front, fixed runners in the back, a brake, and a protective shell, used in timed races down long, steep, winding, icy courses
3. a contest in which teams on bobsleds compete

intransitive verb bobsledded, bobsledding