Simple Definition of brainchild
: an idea, plan, or creation of one person
Full Definition of brainchild
: a product of one's creative effort
Examples of brainchild
The museum is the brainchild of a wealthy art collector.
<the artificial language Esperanto was the brainchild of L. L. Zamenhof, a Polish oculist>
First Known Use of brainchild
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