The Collaborative International Dictionary of English v.0.48:

Fascicle \Fas"ci*cle\, n. [L. fasciculus, dim. of fascis. See
   Fasces.]
   1. A small bundle or collection; a compact cluster; as, a
      fascicle of fibers; a fascicle of flowers or roots.
      [1913 Webster]

   2. One of the divisions of a book published in parts;
      fasciculus.
      [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

fascicle
    n 1: an installment of a printed work [syn: fascicle,
         fascicule]
    2: a bundle of fibers (especially nerve fibers) [syn: fiber
       bundle, fibre bundle, fascicle, fasciculus]