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
seeing is believing
one must believe something that one sees
Seeing is believing and I did not believe the size of the house until I actually saw it.