Any of various primitive burrowing crabs constituting the family Raninidae, which have a body shape and claws modified for digging, and somewhat resemble a frog.
Origin
Late 19th century; earliest use found in Henry Nicholson (1844–1899), biologist and geologist.
Definition of frog crab in US English:
frog crab
noun
Any of various primitive burrowing crabs constituting the family Raninidae, which have a body shape and claws modified for digging, and somewhat resemble a frog.
Origin
Late 19th century; earliest use found in Henry Nicholson (1844–1899), biologist and geologist.