#flap.animal_tissue  a movable piece of tissue partly connected to the body
  supertype:  animal_tissue  the tissue in the bodies of animals
  subtype:  uvula  a small pendant fleshy lobe at the back of the soft palate
  subtype:  soft_palate__velum  a muscular flap that closes off the nasopharynx during swallowing or speaking
  subtype:  protective_fold  a flap of tissue that protects what it covers
     subtype:  eyelid__lid  either of two folds of skin that can be moved to cover or open the eye; "his lids would stay open no longer"
     subtype:  nictitating_membrane__nictitatingmembrane__thirdeyelid  a protective fold of skin in the eyes of reptiles and birds and some mammals
        subtype:  haw  the nictitating membrane of a horse
  subtype:  cusp.flap__leaflet  a thin triangular flap of a heart valve

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