fasciculus

from WordNet (r) 3.0 (2006)

fasciculus
    n 1: a bundle of fibers (especially nerve fibers) [syn: {fiber
         bundle}, {fibre bundle}, {fascicle}, {fasciculus}]

from The Collaborative International Dictionary of English v.0.48

Fasciculus \Fas*cic"u*lus\, n.; pl. {Fasciculi}. [L. See
   {Fascicle}.]
   1. A little bundle; a fascicle.
      [1913 Webster]

   2. A division of a book.
      [1913 Webster]