ALL meanings of oyster crab
oys·ter crab
O o - noun oyster crab a pea crab, Pinnotheres ostreum, the female of which lives as a commensal within the mantle cavity of oysters. 1
- noun oyster crab any of several small soft-bodied crabs of the genus Pinnotheres, esp P. ostreum, that live as commensals in the mantles of oysters 0
- noun oyster crab any of various small, thin-shelled crabs (family Pinnotheridae) that live as commensals in the gill cavities of oysters, clams, etc. 0