Source : Webster's Revised Unabridged Dictionary (1913)

Chalet \Cha*let"\, n. [F.]
   1. A herdsman's hut in the mountains of Switzerland.

            Chalets are summer huts for the Swiss herdsmen.
                                                  --Wordsworth.

   2. A summer cottage or country house in the Swiss mountains;
      any country house built in the style of the Swiss
      cottages.

Source : WordNet®

chalet
     n : a Swiss house with a sloping roof and wide eaves or a house
         built in this style