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