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1. the backbone
2. a ridge or crest of land
3. (in some boats) a corner-like intersection where the bottom meets the side
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
A part of an animal carcass backbone, with parts adjoining it, cut for cooking.
A part of a ship's waterway rising above the deck and hollowed out on the inboard edge to make a path for water.
That point where the sides and bottom meet on a flat- or V-bottomed boat.
A longitudinal member that lies along the bilge where the sides and bottom of the boat meet.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.