bob ‧ sleigh /ˈbɒbsleɪ $ ˈbɑːb-/ BrE AmE ( also bob‧sled /ˈbɒbsled $ ˈbɑːb-/) noun
1 . [countable] a small vehicle with two long thin metal blades instead of wheels, that is used for racing down a special ice track
2 . [uncountable] a sports event in which people race against each other in bobsleighs:
Sixteen teams took part in the 400 m bobsleigh.
—bobsleigh verb [intransitive]