Dictionary
cos•tal
Pronunciation: (kos'tl, kôs'tl), [key]—
adj.
1. Anat.pertaining to the ribs or the upper sides of the body:
costal nerves.
2. Bot., Zool.pertaining to, involving, or situated near a costa.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.