- 1a small bag made of very thin rubber that becomes larger and rounder when you fill it with air or gas. Balloons are brightly colored and used as decorations or toys to blow up/pop a balloon My balloon has burst! A thousand balloons were released to mark the event. compare trial balloon
- 2 = hot-air balloon Idioms
to be very unsuccessful; to not be accepted by people My suggestion went over like a lead balloon.
go over like a lead balloon(informal)jump to other results