From Longman Dictionary of Contemporary Englishbrainchildbrain‧child /ˈbreɪntʃaɪld/ noun [singular] IDEAan idea, plan, organization etc that someone has thought of without any help from anyone elsebrainchild of The festival was the brainchild of Reeves.
Examples from the Corpus
brainchild• The Jospin administration's job-creating brainchild was greeted with hoots of derision when it was announced in 1997.• A new game, the brainchild of Andrew Wilson, was launched in 1999.• The musical is the brainchild of Anthony and Rosalie Calabrese, who together wrote the book, music and lyrics.• Pavilions of Splendour is the brainchild of Gwyn Headley who says the idea was born from a growing demand for unusual properties.• The new computer system is the brainchild of our systems manager.• This approach to grammatical analysis is largely the brainchild of Chomsky.• It was the brainchild of Eric Kaye who lives in the area and had already published a history of the airfield.• This was the brainchild of Martin and Hermon Bond, two farmers, who had more than a passing interest in golf.brainchild of• The personal computer was the brainchild of a man named Steve Jobs.From Longman Business Dictionarybrainchildbrain‧child /ˈbreɪntʃaɪld/ noun [singular] an idea, plan, organization etc that someone has thought of, without any help from anyone elseThe business was the brainchild of two college friends. 