The Collaborative International Dictionary
Avicula
Avicula \A*vic"u*la\, n. [L., small bird.] (Zo["o]l.) A genus of marine bivalves, having a pearly interior, allied to the pearl oyster; -- so called from a supposed resemblance of the typical species to a bird.
Avicula
Sea wing \Sea" wing`\ (Zo["o]l.) A wing shell ( Avicula).