n.
1.improvement (or an intended improvement) in the existing form or condition of institutions or practices etc.
2.a religious movement of the 16th century that began as an attempt to reform the Roman Catholic Church and resulted in the creation of Protestant churches
3.rescuing from error and returning to a rightful course
Idiom of the Day
ugly duckling
an ugly or plain child who grows up to be attractive
The girl was an ugly duckling when she was a child but now she is very beautiful.