WordNet 3.0 Copyright © 2006 by Princeton University.
- 1. costa, structure, anatomical structure, complex body part, bodily structure, body structure
- usage: a riblike part of a plant or animal (such as a middle rib of a leaf or a thickened vein of an insect wing)
- 2. rib, costa, bone, os
- usage: any of the 12 pairs of curved arches of bone extending from the spine to or toward the sternum in humans (and similar bones in most vertebrates)
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See also: costa (Dictionary)