costa

nouns

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
is derived from
costal
is a type of (narrower)
a particular complex anatomical part of a living thing
"he has good bone structure"
anatomical structure, bodily structure, body structure, complex body part, structure
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)
costa, rib
is derived from
costal