come of age

Từ điển Oxford Advanced Learner 8th

ˌcome of ˈage idiom
1. when a person comes of age, they reach the age when they have an adult's legal rights and responsibilities
•The money will go to the children when they come of age.
see also ↑coming of age
2. if sth comes of age, it reaches the stage of development at which people accept and value it
•It was the year that concern for the environment really came of age.
Main entry: ↑age_idiom