cos·tal /ˈkɑstḷ/ 形容詞
肋骨狀的,具肋的,具前緣脈的
Cos·tal a.
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.
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costal
adj : of or relating to or near a rib