D defs.my
Entry 3 senses Webster, 1913

Costa

/(kŏs"tȧ)/ · Cos·ta · IPA /ˈkɑ.stə/
01 n. A rib of an animal or a human being.
  1. 1.
    A rib of an animal or a human being.(Anat.)
  2. 2.
    A rib or vein of a leaf, especially the midrib.(Bot.)
  3. 3.
    The anterior rib in the wing of an insect.(Zool.)