Dictionary  der•rickPronunciation: (der'ik), [key] —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. Mach.luff. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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