DCHP-1 Online
déboulé [< Cdn F < F débouler roll down] Obs. 
n. a rock slide; avalanche.
- 1806 (1960) In these last courses is a large Deboulle on right. . . .
- 1824 (1955) These Deboules, Avalanches are very common here abouts. . . . The Word Deboulé [is] a common term in this Country . . . the meaning of the word is any part or portion of a Mountain or Bank of Rock Earth, Snow Stone &c tumbled down. . . .
- 1904 . . . the Babines . . . were in the habit of trading . . . with their own congeners of what was then called the Fallen Rock--now Ackwilgate or Rocher Deboulé. . . .
- 1806 (1960) In these last courses is a large Deboulle on right. . . .