n.
1.an event in which one thing is substituted for another
2.the act of furnishing an equivalent person or thing in the place of another
3.someone who takes the place of another person
4.a person or thing that takes or can take the place of another
5.filling again by supplying what has been used up
6.a person who follows next in order
Idiom of the Day
bring out (something) or bring (something) out
to make something available, to introduce something to the public
The woman brought out some snacks for the children. The computer company brought out a new computer last month.