Reticulum \Re*tic"u*lum\, n.;pl. Reticula. [L. dim. of rete a net.]

(Anat.)
   (a) The second stomach of ruminants, in which folds of the mucous membrane form hexagonal cells; -- also called the honeycomb stomach.
   (b) The neuroglia.

Source: Webster's Revised Unabridged Dictionary (1913)