To tear roughly; mangle in rending or violently tearing apart: as, to lacerate the flesh; a lacerated wound.Figuratively, to torture; harrow: as, to lacerate one's feelings.Rent; torn: specifically applied (from natural appearance) in botany (also lacerated) to a leaf having the edge variously cut into irregular segments, and in anatomy to three foramina at the base of the cranium. See below.