sponge crab

noun

Definition of sponge crab 

1 : a female crab bearing an egg mass

2 : any of several crabs commonly found in association with sponges: such as

a(1) : grass crab

(2) : a crab of the group Dromiacea that decorates its back with sponges or ascidians

b : any of several hermit crabs of the Pacific coast of North America that excavate their homes in a living sponge (Suberites latus)

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