Cos"tal (k?s"tal), a. [Cf. F. costal. See Costa.]

1. Anat.

Pertaining to the ribs or the sides of the body; as, costal nerves.

2. Bot. & Zool.

Relating to a costa, or rib.

Costal cartilage. See Cartilage, and Illust. of Thorax.


© Webster 1913.

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