behind 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 
   

1. in or to or toward the rear
   "he followed behind"; "seen from behind, the house is more imposing than it is from the front"; "the final runners were far behind"
   behind  behind 
   
2. remaining in a place or condition that has been left or departed from
   "when he died he left much unfinished work behind"; "left a large family behind"; "the children left their books behind"; "he took off with a squeal of tires and left the other cars far behind"
   behind  behind 
   
3. in debt
   "he fell behind with his mortgage payments"; "a month behind in the rent"; "a company that has been run behindhand for years"; "in arrears with their utility bills"
   behind  behindhand  in arrears  behind  behindhand  in arrears 
   
4. in or into an inferior position
   "fell behind in his studies"; "their business was lagging behind in the competition for customers"
   behind  behind 
   
5. of timepieces
   "the clock is almost an hour slow"; "my watch is running behind"
   behind  slow  behind  slow 
   

1. having the lower score or lagging position in a contest
   "behind by two points"; "the 8th inning found the home team trailing"
   behind