whizz ‧ kid BrE AmE British English , whiz kid American English /ˈwɪzkɪd/ noun [countable] informal
a young person who is very skilled or successful at something:
financial whizzkids in the City
whizz ‧ kid BrE AmE British English , whiz kid American English /ˈwɪzkɪd/ noun [countable] informal
a young person who is very skilled or successful at something:
financial whizzkids in the City
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012