Noun placuna has 1 sense
  1. Placuna, genus Placuna - windowpane oysters
    --1 is a kind of mollusk genus
    --1 is a member of
     Bivalvia, class Bivalvia, Lamellibranchia, class Lamellibranchia, class Pelecypoda
    --1 has members: window oyster, windowpane oyster, capiz, Placuna placenta
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