definition of
keel

[1] #1 keel n. a projection or ridge that suggests a keel. wn

[2] #2 keel v. [stagger, reel, lurch, swag, careen] walk as if unable to control one's movements; "The drunken man staggered into the room". wn

[3] #3 keel n. the median ridge on the breastbone of birds that fly. wn

[4] #4 keel n. one of the main longitudinal beams (or plates) of the hull of a vessel; can extend vertically into the water to provide lateral stability. wn