costa

/ˈkɑstə/

Other forms: costae

Definitions of costa

1. 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)
   type of:

   anatomical structure, bodily structure, body structure, complex body part, structure

   a particular complex anatomical part of a living thing
2. 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)
   synonyms: rib

   types:

   true rib

   one of the first seven ribs in a human being which attach to the sternum

   type of:

   bone, os

   rigid connective tissue that makes up the skeleton of vertebrates