keel in WordNet English dictionary

1. walk as if unable to control one's movements
   "The drunken man staggered into the room"
   stagger  reel  keel  lurch  swag  careen 
   

1. one of the main longitudinal beams (or plates) of the hull of a vessel; can extend vertically into the water to provide lateral stability
   keel 
   
2. the median ridge on the breastbone of birds that fly
   keel 
   
3. a projection or ridge that suggests a keel
   keel