| 单词 | derrick |
| 释义 | derrick /der"ik/, n. 1. Mach. a jib crane having a boom hinged near the base of the mast so as to rotate about the mast, for moving a load toward or away from the mast by raising or lowering the boom. 2. Also called oil derrick. the towerlike framework over an oil well or the like. 3. a boom for lifting cargo, pivoted at its inner end to a ship's mast or kingpost, and raised and supported at its outer end by topping lifts. v.t. , v.i. 4. Mach. luff. [orig. a hangman, the gallows, after the surname of a well-known Tyburn hangman, ca. 1600] |
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