to cut or divide into two equal or nearly equal parts.

Geometry . to cut or divide into two equal parts

to bisect an angle.

to intersect or cross

the spot where the railroad tracks bisect the highway.

to split into two, as a road; fork

There's a charming old inn just before the road bisects.

Also called split. Philately . a portion of a stamp, usually half, used for payment of a proportionate amount of the face value of the whole stamp.