brainchild/ˈbɹeɪnt͡ʃaɪld/EtymologyFrom brain + child.nounA creation of one's brain; an original idea or innovation of a person or group of people, an organization, etc.“The entire project was the brainchild of a small group of visionaries.”verbTo think up (an idea or innovation); to come up with.“John Law brainchilded the establishment of a national bank to expedite and secure the creation of credit.”