a product of your creative thinking and work; "he had little respect for the inspirations of other artists"; "after years of work his brainchild was a tangible reality"
A creation, original idea, or innovation, usually used to indicate the originators
Someone's brainchild is an idea or invention that they have thought up or created. The record was the brainchild of rock star Bob Geldof. an idea, plan, organization etc that someone has thought of without any help from anyone else brainchild of