| costa | 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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| costa | a riblike part of a plant or animal (such as a middle rib of a leaf or a thickened vein of an insect wing) |
| costa | a republic in Central America |
| costa | a native or inhabitant of Costa Rica |
| costa | of or relating to Costa Rica or its people |
| costa | the basic unit of money in Costa Rica |
| costa | monetary unit in Costa Rica |
| costa | (anatomy) of or relating to or near a rib |
| costa | the cartilages that connect the sternum and the ends of the ribs |
| costa | groove between the ribs where the nerves and blood vessels are |
| costa | pain in the chest caused by inflammation of the muscles between the ribs |
| costa | a Penutian language spoken by the Costanoan people |