RhymeZone: costa definitions

Definitions of costa:

noun: a riblike part of a plant or animal (such as a middle rib of a leaf or a thickened vein of an insect wing)
noun: 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)
name: A surname (common: 1 in 9090 families; popularity rank in the U.S.: #1076)