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rock crab

noun
1.
any of several crabs that live along rocky beaches, especially those of the genus Cancer, as C. irroratus, of the eastern coast of North America, having the rear legs modified for running.
Origin
1830-1840
1830-40, Americanism
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for rock crab
  • Mottled sea stars and graceful decorator crabs were common, as was the red rock crab.

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10
11
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