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
make it up to (someone)
to do something for someone in order to compensate for an unfulfilled promise or debt
I cannot help you tonight but I will make it up to you later.