CARINA, among anatomists, is used to denote the spina dorsi; as likewise for the fibrous rudiments or embryo of a chick appearing in an incubated egg. The carina consists of the entire vertebra, as they appear after ten or twelve days incubation. It is thus called, because crooked in form of the keel of a ship.—Botanists also, for the like reason, use the word carina, to express the lower petal of a papilionaceous flower.