More on Crab from Fact Monster:

• hermit crab - hermit crab hermit crab, a crustacean distinguished from true crabs by its long, soft, spirally ...
• blue crab - blue crab blue crab, common name for a crustacean, Callinectes sapidus, found on the S Atlantic and ...
• fiddler crab - fiddler crab fiddler crab, common name for small, amphibious crabs belonging to the genus Uca. They ...
• Cancer, in astronomy - Cancer Cancer [Lat.,=the crab], in astronomy, constellation lying on the ecliptic (the sun's ...
• horseshoe crab - horseshoe crab horseshoe crab, large, primitive marine arthropod related to the spider, sometimes ...

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