I. to ‧ bog ‧ gan 1 /təˈbɒɡən $ -ˈbɑː-/ BrE AmE noun [countable]
[ Date: 1800-1900 ; Language: Canadian French ; Origin: tobogan , from Micmac tobagun 'sledge made of skin' ]
a light wooden board with a curved front, used for sliding down hills covered in snow ⇨ sledge
II. toboggan 2 BrE AmE verb [intransitive]
to slide down a hill on a toboggan
—tobogganing noun [uncountable]