Also found in: Thesaurus.
Related to hard-shell crab: Soft shell crabs
A marine crab with a fully hardened shell, especially an edible crab in this stage.
(Animals) a crab, esp of the edible species Cancer pagurus, that has not recently moulted and therefore has a hard shell. Compare soft-shell crab
a crab, esp. an edible crab, that has not recently molted and has a hard shell.