单词 | crab |
释义 | crab 1 ![]() n. 1. a. Any of various chiefly marine decapod crustaceans of the infraorder Brachyura, having a hard carapace that covers a broad flattened cephalothorax with a small abdomen tucked beneath it, and an anterior pair of legs that are large and pincerlike. b. Any of various similar decapod crustaceans, such as a hermit crab or a king crab. c. Crabmeat. 2. a. A crab louse. b. crabs Slang Infestation by crab lice. 3. The maneuvering of an aircraft partially into a crosswind to compensate for drift. 4. A machine for handling or hoisting heavy weights. v. crabbed, crab·bing, crabs v.intr. 1. To hunt or catch crabs. 2. To scurry sideways in the manner of a crab. 3. To drift diagonally or sideways, especially when under tow. 4. To direct an aircraft into a crosswind. v.tr. Idiom: 1. To direct (an aircraft) partly into a crosswind to eliminate drift. 2. To cause to move or scurry sideways. catch a crab To make a faulty stroke in rowing that causes the blade of the oar to strike the water on the recovery stroke. [Middle English crabbe, from Old English crabba; see gerbh- in the Appendix of Indo-European roots.] crabber n. |
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