DCHP-1 Online
tobogganing 
n. the pastime of sliding on a toboggan (def. 2).
See also: toboggan ((n.)) (def. 2) tobogganist toboggan ((v.)) (def. 1)
- 1849 . . . an amusement of which Canadian boys, and sometimes ladies too, are passionately fond . . . is called "toboggoning."
- 1887 I cannot conceive what there is in tobogganing to so fascinate the adult portion of both sexes in our 1886 humanity.
- 1966 The Gettys go in for backyard barbecues [and] tobogganing in the North Saskatchewan ravines. . . .
- 1849 . . . an amusement of which Canadian boys, and sometimes ladies too, are passionately fond . . . is called "toboggoning."