brainchild
/ˈbreɪnˌtʃaɪld/
noun
- An original idea, invention, or creation that someone has thought of or developed.
- The museum's interactive exhibit was the brainchild of its lead curator.
- This award-winning app is the brainchild of a team of college students.
- The new recycling program was the brainchild of a local environmental group.