WordNet sense 1 (a long narrow opening):

crack, crevice, fissure, scissure

WordNet sense 2 (used of hooves):

cloven, bisulcate

WordNet sense 3 (separated into parts or pieces):

divided

WordNet sense 4 (having one or more incisions reaching nearly to the midrib):

dissected

WordNet sense 5 (of leaf shapes; of leaves composed of several similar parts or lobes):

compound, compound