n.
1.a period during which something or somebody is dominant or powerful
2.the period during which a monarch is sovereign
3.royal authority reign v.
1.have sovereign power
2.be larger in number, quantity, power, status or importance
Idiom of the Day
have to (do something)
to be obliged or forced to do something
I have to leave at 4:00 or I will be late for my appointment.