fascicle

noun5

1. •
   A bundle or cluster.
2. •
   A bundle of skeletal muscle fibers surrounded by connective tissue.
3. •
   A cluster of flowers or leaves, such as the bundles of the thin leaves (or needles) of pines.
4. •
   A discrete bundle of vascular tissue.
5. •
   A discrete section of a book issued or published separately, generally as a temporary measure while the work is in progress.