snowplough

from WordNet (r) 3.0 (2006)

snowplough
    n 1: a vehicle used to push snow from roads [syn: {snowplow},
         {snowplough}]

from The Collaborative International Dictionary of English v.0.48

Snowplow \Snow"plow`\, Snowplough \Snow"plough`\, n.
   An implement operating like a plow, but on a larger scale,
   for clearing away the snow from roads, railways, etc.
   [1913 Webster]