carina

باللغة العربية: جُؤْجُؤ، زَوْرَق

1. A longitudinal ridge or projection like the keel of a boat.
2. Part of a papilionaceous flower consisting of two petals, commonly united, which encloses the organs of fructification.
3. The keel of the glume of grasses.
4. The principal nerve of a sepal.
5. The keel of the breastbone of birds.
6. Any of several features that have a projecting central ridge.

الجمع carinas