DCHP-1 Online
snow tractor 
a kind of snowmobile (def. 1).
See also: snowmobile (def. 1)
- 1936 Somebody began to work on the idea of snowmobiles and snow tractors.
- 1947 When the department got around to finding out about snow tractors, the weather threatened to break.
- 1948 . . . replacing the old-fashioned dog team and sled [are] . . . motor toboggans and "snow tractors" which attain a speed up to 35 miles per hour and manoeuver in almost any kind of terrain.
- 1936 Somebody began to work on the idea of snowmobiles and snow tractors.