adjective
The main cause of traffic deaths is drunken driving. In Britain, the main street of a town is called 'the High Street'. We arrived late and missed the main entertainment
The main part of the strike force landed in Normandy
Economic recovery is the main thrust of our programme for reform
He lifted that block by main force!
noun
Water reaches the city through a huge underground main
With all his might and main he tried to move the stone blocking the cave
US