brainchild

noun

1. (informal)A 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.”

   “A brayne-child o' mine ovvne! and I am proud on't!”

   “I am glad you find so many lovers of your brain children in the West, although I knew it would be so.”

   “Then, gradually, the almost maternal yearning to see his brain-child [a play] once more, which can never be wholly crushed out of a young dramatist, returned to him—faintly at first, then getting stronger by degrees till it could no longer be resisted. True, he knew that when he beheld it, the offspring of his brain would have been mangled almost out of recognition, but that did not deter him.”

   “Inspiration's old lady gave birth to a new brainchild one afternoon at a Rhythm Kings rehearsal, when I took a few choruses on Jack Pettis' C-melody sax while he was out humoring his bladder.”

verb

1. (rare, transitive)To 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.”