n.
1.(physiology) a shortening or tensing of a part or organ (especially of a muscle or muscle fiber)
2.the process or result of becoming smaller or pressed together
3.a word formed from two or more words by omitting or combining some sounds
4.the act of decreasing (something) in size or volume or quantity or scope
Idiom of the Day
zero hour
the exact time when an attack or other military action will start
The air force planes waited until zero hour in order to begin their bombing mission.
