adj.
1.being a replacement or substitute for a regular member of a team
2.capable of substituting in any of several positions on a team
3.artificial and inferior substitute n.
1.a person or thing that takes or can take the place of another
2.an athlete who plays only when another member of the team drops out
3.someone who takes the place of another (as when things get dangerous or difficult) substitute v.
1.put in the place of another
2.be a substitute
3.act as a substitute
Idiom of the Day
have the best of both worlds
to be able to enjoy two different opportunities
The man has the best of both worlds and can enjoy the outdoors and nature while he is working at his job.