n.
1.something that serves to indicate or suggest
2.the act of indicating or pointing out by name
3.(medicine) a reason to prescribe a drug or perform a procedure
4.something (as a course of action) that is indicated as expedient or necessary
5.a datum about some physical state that is presented to a user by a meter or similar instrument
Idiom of the Day
see things
to imagine that one sees something that is not there
The boy is always daydreaming and imagines that he is seeing things.