halve / hav; häv/ • v. [tr.] 1. divide into two parts of equal or roughly equal size: peel and halve the pears. ∎ reduce or be reduced by half: [intr.] profits are expected to halve after a tail-off in new customers | [tr.] his pledge to halve the deficit over the next four years. ∎ share (something) equally with another person: she insisted on halving the bill. ∎ Golf use the same number of strokes as one's opponent and thus tie (a hole or match).2. [usu. as n.] (halving) fit (crossing timbers) together by cutting out half the thickness of each.