couple in WordNet English dictionary

1. two items of the same kind
   couple  pair  twosome  twain  brace  span  yoke  couplet  distich  duo  duet  dyad  duad 
   
2. a pair who associate with one another
   "the engaged couple"; "an inseparable twosome"
   couple  twosome  duo  duet 
   
3. a pair of people who live together
   "a married couple from Chicago"
   couple  mates  match 
   
4. (physics) something joined by two equal and opposite forces that act along parallel lines
   couple 
   
5. a small indefinite number
   "he's coming for a couple of days"
   couple 
   

1. engage in sexual intercourse
   "Birds mate in the Spring"
   copulate  mate  pair  couple 
   
2. link together
   "can we couple these proposals?"
   couple  couple on  couple up 
   
3. bring two objects, ideas, or people together
   "This fact is coupled to the other one"; "Matchmaker, can you match my daughter with a nice young man?"; "The student was paired with a partner for collaboration on the project"
   match  mate  couple  pair  twin 
   
4. form a pair or pairs
   "The two old friends paired off"
   pair  pair off  partner off  couple