Also found in: Dictionary, Wikipedia.
Related to topping lift: Lazy Jack
topping lift[′täp·iŋ ‚lift]
A rope or chain extending from the head of a boom or gaff to a mast or to the vessel's structure for the purpose of supporting the weight and permitting the boom or gaff end to be raised or lowered.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.