Source : Webster's Revised Unabridged Dictionary (1913)

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

   2. A division of a book.

Source : WordNet®

fasciculi
     See {fasciculus}

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