flubber
/ˈflʌbər/
noun
- A fictional, bouncy, green substance that appears in movies and stories, often with magical or super-elastic properties.
- In the movie, the professor invented flubber that could bounce higher than anything else.
- Flubber is a fun, imaginary material that makes things fly and bounce.
- The kids pretended the green slime was flubber and bounced it around the room.