- (transitive) To reduce to half the original amount.
- (architecture, transitive) To join two pieces of timber etc. by cutting away each for half its thickness at the joining place, and fitting together.
- (transitive) To make up half of.
- (transitive) To divide into two halves.
- (golf, transitive) In match play, to achieve a tie or draw on.
"to halve a hole or a match"