filler
nounUK /ˈfɪl.ər/
US /ˈfɪl.ɚ/
Filler is something used to fill up an empty space.
The baker added filler to the bread dough to make it bigger.
RELATED WORDS
OTHER MEANINGS
2. Words or sounds used to fill pauses in speech, like 'um' or 'you know'.
She used filler words like 'um' while she thought of an answer.
3. A substance added to a product to increase its bulk or weight.
The cereal had filler in it to make each box heavier.
4. An extra song or performance used to fill time in a show.
The band played a short filler song while the stage was being set up.
5. A material used to smooth cracks or holes before painting.
He spread filler over the nail holes in the wall before painting it.