Carina

1. n. The keel of the breastbone of birds.
2. n. A keel
3. n. That part of a papilionaceous flower, consisting of two petals, commonly united, which incloses the organs of fructification
4. n. A longitudinal ridge or projection like the keel of a boat.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.