From Longman Dictionary of Contemporary Englishgrow up phrasal verb1ADULTto develop from being a child to being an adultWhat do you want to be when you grow up?I grew up in Chicago.2grow up! spoken used to tell someone to behave in a more responsible way, like an adult3GROUP OF PEOPLEto start to exist or develop graduallyTrading settlements grew up by the river. →grow→ See Verb table
Examples from the Corpus
grow up• This is the neighborhood where my fathergrew up.• We plan to go and live in Florida when the children have all grown up.• What do you want to be when you grow up?• Margaret Hallworth was born in Manchester but grew up in North Wales.• I grew up on a farm in eastern Pennsylvania.