toboggan

noun

1. a long, narrow, flat-bottomed sled made of a thin board curved upward and backward at the front, often with low handrails on the sides, used especially in the sport of coasting over snow or ice.

verb (used without object)

2. to use, or coast on, a toboggan.
3. to fall rapidly, as prices or one’s fortune.

noun

1. a light wooden frame on runners used for sliding over snow and ice
2. a long narrow sledge made of a thin board curved upwards and backwards at the front

verb -gans, -ganing or -ganed

3. (intr) to ride on a toboggan

n.“long, flat-bottomed sled,” 1829, from Canadian French tabagane, from Algonquian (probably Micmac) tobakun “a sled.” The verb is recorded from 1846. As American English colloquial for a type of long woolen cap, it is recorded from 1929 (earlier toboggan cap, 1928), presumably because one wore such a cap while tobogganing.