Source : Webster's Revised Unabridged Dictionary (1913)

Trabecula \Tra*bec"u*la\, n.; pl. {Trabecul[ae]} (-l[=e]). [L.,
   a little beam.] (Anat.)
   A small bar, rod, bundle of fibers, or septal membrane, in
   the framework of an organ part.

Source : WordNet®

trabecula
     n : rod-shaped structures of fibrous tissue that divide an organ
         into parts (as in the penis) or stabilize the structure
         of an organ (as in the spleen)
     [also: {trabeculae} (pl)]

trabeculae
     See {trabecula}