Costa
WordNet
noun
(1) 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)
(2) A riblike part of a plant or animal (such as a middle rib of a leaf or a thickened vein of an insect wing)
WiktionaryText
Noun
- (anatomy) A rib.
- (biology) A riblike part of a plant or animal, such as a middle rib of a leaf or a thickened vein or the margin of an insect wing.