Meaning

noun a keel-shaped constellation in the southern hemisphere; contains the start Canopus

noun any of various keel-shaped structures or ridges such as that on the breastbone of a bird or that formed by the fused petals of a pea blossom

originName of a fourth century martyr, feminine of Latin carinus, derivative of carus "beloved"; also a latinization of Karina and Karin (= Catherine) in northern Europe.

Etymology from Wiktionary, CC BY-SA 3.0