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
an open-and-shut case
something (often a legal matter) that is simple and clear
It was an open-and-shut case when the judge decided the case of the stolen computer.