Sentence:  Mr. Macaulay, the landlord, insisted upon trying to "<WSD>toboggan</WSD>" us down the mountain on the saddle cloth of one of the horses, an attempt that ended of course in disaster, for the surface was much too small for the three of us, and the snow too soft for the purpose. 
Meaning of the word marked with <WSD> tags:  To slide down a hill on a toboggan or other object.