To make up half of.
In match play, to achieve a tie or draw on.
To join two pieces of timber etc. by cutting away each for half its thickness at the joining place, and fitting together.
To reduce to half the original amount.
To divide into two halves.
To fold or pleat (usually used in passive).
Folded multiple times lengthwise like a fan, usually lending stiffness to a flat structure such as a leaf; corrugated; pleated.