1. Grit is a mixture of salt and small pieces of stone which is spread over roads if they have snow or ice on them to make them less slippery. Grit is also a verb. • The council have been gritting the roads in anticipation of the big freeze. The lorry used to spread grit is called a gritter.
2. A depot (the 't' is silent) is a large building or open area where buses, railway engines, or other utility vehicles are kept when they are not being used.