1. a small bundle or cluster of fibers, especially nerve fibers or muscle fibers
Usage: anatomy; medical
2. a small bundle of items bound together
Usage: formal

Examples

• The nerve fasciculus was damaged during the surgery.
• Each muscle fasciculus contains hundreds of individual fibers.
• The anatomist identified several fasciculi in the spinal cord.
• The librarian found a fasciculus of ancient manuscripts.
• The fasciculus of nerve fibers controls motor function.
• Researchers studied the organization of fasciculi in brain tissue.