cleft

Noun
  1. A split or indentation in something (as the palate or chin) (synset 113931215)
    is a type of: indentation, indenture - a concave cut into a surface or edge (as in a coastline)
  2. A long narrow opening (synset 109281621)
    is a type of: gap, opening - an open or empty space in or between things
    subtypes:
    • chap - a crack in a lip caused usually by cold
    • chink - a narrow opening as e.g. between planks in a wall
    • crevasse - a deep fissure
    • fatigue crack - a crack in metal resulting from metal fatigue
    • break, fault, faulting, fracture, geological fault, shift - (geology) a crack in the earth's crust resulting from the displacement of one side with respect to the other
    • rift - a narrow fissure in rock
    • slit - a narrow fissure
    • split - a lengthwise crack in wood
    • vent, volcano - a fissure in the earth's crust (or in the surface of some other planet) through which molten lava and gases erupt
    same as: crack, crevice, fissure, scissure
Adjective
  1. Split or divided (synset 302490240)
    "he had a cleft chin and strong jaw"; "the infant was born with a double harelip and cleft palate"; "a cleft stick"
    similar to: divided - separated into parts or pieces
  2. Having one or more indentations reaching nearly to the midrib (synset 302179812)
    similar to: compound - composed of more than one part
    same as: dissected

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