gritter

plural gritters

1. One who grits anything.

   He was gritting his teeth while lifting weights. I am from the teeth-gritters myself, and my teeth are also very soft.

   2010, Richard Grayson, The Brooklyn Diaries: 1969-1981, page 166

2. A vehicle that applies grit to icy roads to improve traction.

   You need more than gritters, you need ploughs.

   2009 February 4, “Letters: Sledging, shovels and snowdrops”, in The Guardian