n.
1.a quarter of the circumference of a circle
2.a quarter of the circumference of a circle
3.any of the four areas into which a plane is divided by two orthogonal coordinate axes
4.the area enclosed by two perpendicular radii of a circle
5.a measuring instrument for measuring altitude of heavenly bodies
Idiom of the Day
sadder but wiser
unhappy about something but having learned something from the experience
The man was sadder but wiser after he learned that his wallet had been stolen.