English

Definition of boomerang kid noun from the Oxford Advanced Learner's Dictionary

 

boomerang kid

 noun
noun
BrE
 
; NAmE
 
(also boomerang child) (informal)
 
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an adult child who returns home to live with his or her parents after being away for some time With the country in tough economic times, more young American adults, over age 18, are returning to the family nest. Some boomerang kids may come and go for years, if not decades. Historically, the number of boomerang kids rises when the economy turns sour. The average boomerang child surveyed was 22 years old and had been away from home an average of two years.
See the Oxford Advanced American Dictionary entry: boomerang kid