bunch² (also bunch together, bunch up) verb

1. [intransitive and transitive] to stay close together in a group, or to make people do this:
The children bunched together in small groups.
John stopped, forcing the rest of the group to bunch up behind him.

2. [intransitive and transitive] to make part of your body tight, or to become tight like this:
Sean bunched his fists.

3. [intransitive and transitive] to pull material together tightly in folds:
She bunched the cloth up and threw it away.

4. [transitive] to hold or tie things together in a bunch

[TahlilGaran] Dictionary of Contemporary English ▲