bottom in WordNet English dictionary

1. the fleshy part of the human body that you sit on
   "he deserves a good kick in the butt"; "are you going to sit on your fanny and do nothing?"
   buttocks  nates  arse  butt  backside  bum  buns  can  fundament  hindquarters  hind end  keister  posterior  prat  rear  rear end  rump  stern  seat  tail  tail end  tooshie  tush  bottom  behind  derriere  fanny  ass 
   
2. a depression forming the ground under a body of water
   "he searched for treasure on the ocean bed"
   bed  bottom 
   
3. a cargo ship
   "they did much of their overseas trade in foreign bottoms"
   bottom  freighter  merchantman  merchant ship 
   
4. the lower side of anything
   bottom  underside  undersurface 
   
5. the lowest part of anything
   "they started at the bottom of the hill"
   bottom 
   
6. low-lying alluvial land near a river
   bottomland  bottom 
   
7. the second half of an inning; while the home team is at bat
   bottom  bottom of the inning 
   

1. come to understand
   penetrate  fathom  bottom 
   
2. strike the ground, as with a ship's bottom
   bottom 
   
3. provide with a bottom or a seat
   "bottom the chairs"
   bottom 
   

1. situated at the bottom or lowest position
   "the bottom drawer"
   bottom 
   
2. the lowest rank
   "bottom member of the class"
   bottom