9 letters · 17 points in Scrabble
noun formerly two short sleds coupled together
noun a long racing sled (for 2 or more people) with a steering mechanism
originFrom bobs, the short runners on which the bobsleigh is based (as opposed to a usual sleigh on long runners continuing all the way along the vehicle); further etymology unclear. Attested since 1839 as bob-sled, long before the invention of the sport.
Etymology from Wiktionary, CC BY-SA 3.0