Halve

Hal′ve (häl′ve), n. A half. [Obs.] Chaucer.

Halve (häv), v. t. [imp. & p. p. Halved (hävd); p. pr. & vb. n. Halving.] [From Half.] 1. To divide into two equal parts; as, to halve an apple; to be or form half of.

So far apart their lives are thrown From the twin soul that halves their own. M. Arnold.

2. (Arch.) To join, as two pieces of timber, by cutting away each for half its thickness at the joining place, and fitting together.