concoction

something (as a device) created for the first time through the use of the imagination <the first submarine must have seemed like the looniest concoction ever to spring from the human mind> Synonyms brainchild, coinage, invention, contrivance, creation, innovation, wrinkleRelated Words contraption, device, gadget, gizmo (also gismo), novelty; design, product, work; dream, fantasy (also phantasy), picture, vision; conception, imagining, originationNear Antonyms carbon copy, clone, copy, dupe, duplicate, duplication, facsimile, imitation, reduplication, replica, replication, reproduction