freshwater mussel

Definitions of freshwater mussel
  1. noun
    bivalve mollusk abundant in rivers of central United States
    synonyms: freshwater clam
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    pearly-shelled mussel
    the pearly lining of the dark shells is a source of mother-of-pearl
    thin-shelled mussel
    mussel with thin fragile shells having only rudimentary hinge teeth
    Dreissena polymorpha, zebra mussel
    inch long mollusk imported accidentally from Europe; clogs utility inlet pipes and feeds on edible freshwater mussels
    type of:
    marine or freshwater bivalve mollusk that lives attached to rocks etc.
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