river mussel

English

Noun

river mussel (plural river mussels)

  1. Certain bivalve mollusks of order Unionida, found in flowing fresh water:
    1. (US) especially of genera Unio and Anodonta, both found in rivers of the central U.S. with a shell lined with mother-of-pearl.
    2. (Australia) species Alathyria jacksoni within the family Hyriidae

References