Bobsled

n.	1.	A short sled, mostly used as one of a pair connected by a reach or coupling; also, the compound sled so formed. The long wagon body set on bobsleds. - W. D. Howells.
	2.	a long racing sled (for 2 or more people), having two pairs of runners, with the front pair connected to a steering mechanism. They are usually raced one at a time down a steeply sloping path or specially constructed chute, with sharp banked curves, and attain high speeds.

Noun	1.	bobsled - formerly two short sleds coupled together Synonyms: bobsleigh
	2.	bobsled - a long racing sled (for 2 or more people) with a steering mechanism Synonyms: bobsleigh, bob
Verb	1.	bobsled - ride a bobsled; "The boys bobbed down the hill screaming with pleasure" Synonyms: bob

athletics, bob, bobsleigh, sled, sleigh, sport