complement in WordNet English dictionary

1. something added to complete or embellish or make perfect
   "a fine wine is a perfect complement to the dinner"; "wild rice was served as an accompaniment to the main dish"
   complement  accompaniment 
   
2. either of two parts that mutually complete each other
   complement 
   
3. a word or phrase used to complete a grammatical construction
   complement 
   
4. number needed to make up a whole force
   "a full complement of workers"
   complement  full complement 
   
5. a complete number or quantity
   "a full complement"
   complement 
   
6. one of a series of enzymes in the blood serum that are part of the immune response
   complement 
   

1. make complete or perfect; supply what is wanting or form the complement to
   "I need some pepper to complement the sweet touch in the soup"
   complement