brainchild
UK: ˈbreɪntʃaɪld | US: ˈbreɪnˌtʃaɪld
n. a product of one's creative thinking or imagination; an original idea or invention.
The word "brainchild" emerged in the early 19th century as a metaphorical compound. "Brain" refers to the mind as the source of creativity, while "child" symbolizes the "offspring" or result of that mental labor. The term vividly personifies ideas as "children" birthed by the intellect, reflecting a creative and organic view of innovation. This blend of literal and figurative meanings makes it memorable and expressive.
The new recycling program was the brainchild of a local high school student.
Her latest novel, a brainchild of years of research, became an instant bestseller.
The innovative app was the brainchild of a small tech startup.
He proudly presented his brainchild—a solar-powered car—at the science fair.
The community garden, her brainchild, now provides fresh produce to hundreds of families.