n.
1.a word or phrase used to complete a grammatical construction
2.a complete number or quantity
3.number needed to make up whole force
4.something added to complete or make perfect
5.one of a series of enzymes in the blood serum that are part of the immune response
6.either of two parts that mutually complete each other complement v.
1.make complete or perfect
Idiom of the Day
give (someone or something) the once-over
to visually examine someone or something quickly
We gave the man the once-over when he walked into the restaurant.