noun
(zoology) A covering flap in animals, such as a gill cover.
(botany) The lidlike portion of a moss sporangium or of a fruit that detaches to allow the dispersal of spores or seeds.
(dentistry) A gum flap covering (part of) a partially erupted tooth, usually a wisdom tooth.
A structure which serves as a cover or lid.
(anatomy) One of several flaps of cerebral cortex covering the insula.
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