carinal

< /kəˈraɪ ni, -ˈri-/.

1. Zoology. a keellike part or ridge, especially a ridge of bone on the ventral side of the sternum of birds.
2. Botany. the two conjoined lower petals of a pea or bean flower that enclose the stamen and style.

noun plural -nae (-niː) or -nas

1. a keel-like part or ridge, as in the breastbone of birds or the fused lower petals of a leguminous flower

noun Latin genitive Carinae (kəˈriːniː, -ˈraɪ-)

1. a large conspicuous constellation in the S hemisphere close to the Southern Cross that contains Canopus, the second brightest star in the sky. It was originally considered part of Argo

n. pl. ca•ri•nae (-nē)

1. A keel-shaped ridge or structure, such as the ridge on the under surface of the fornix of the brain.