[krab] 
noun, verb, crabbed, crab⋅bing.| 1. | any decapod crustacean of the suborder Brachyura, having the eyes on short stalks and a short, broad, more or less flattened body, the abdomen being small and folded under the thorax. |
| 2. | any of various other crustaceans, as the hermit crab, or other animals, as the horseshoe crab, resembling the true crabs. |
| 3. | (initial capital letter ) Astronomy, Astrology. the zodiacal constellation or sign Cancer. |
| 4. | (initial capital letter) Astronomy. the Crab Nebula. |
| 5. | any of various mechanical contrivances for hoisting or pulling. |
| 6. | Aeronautics. the maneuver of crabbing. |
| 7. | Informal. the crab louse. See under louse (def. 1). |
| 8. | crabs,
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| 9. | to catch or attempt to catch crabs. |
| 10. | to move sideways, diagonally, or obliquely, esp. with short, abrupt bursts of speed; scuttle. |
| 11. | Aeronautics. (of an aircraft) to head partly into the wind to compensate for drift. |
| 12. | Nautical. to drift or advance with some movement sideways, esp. when under tow. |
| 13. | to move (a vehicle or object) sideways, diagonally, or obliquely, esp. with short, abrupt movements. |
| 14. | Aeronautics. to head (an aircraft) partly into the wind to compensate for drift. |
| 15. | catch a crab, to make a faulty stroke in rowing, so that the oar strikes the water forcibly on the backstroke. |