Definitions
1.NounA long, narrow crack or opening made by breaking or splitting, especially in rock or earth.
2.NounA groove, deep furrow, elongated cleft or tear between body parts or in the substance of an organ.
3.NounA break or slit in tissue usually at the junction of skin and mucous membrane.
4.NounA state of incompatibility or disagreement.
5.VerbTo split, forming fissures.