Definitions of bunch:

• noun:   any collection in its entirety
• noun:   a grouping of a number of similar things

  Example: "A bunch of trees"

• noun:   an informal body of friends
• verb:   gather or cause to gather into a cluster

  Example: "She bunched her fingers into a fist"

• verb:   form into a bunch

  Example: "The frightened children bunched together in the corner of the classroom"

• name:  A surname (common: 1 in 9090 families; popularity rank in the U.S.: #1060)