Source : Webster's Revised Unabridged Dictionary (1913)

Honeycomb \Hon"ey*comb`\, n. [AS. hunigcamb. See {Honey}, and
   1st {Comb}.]
   1. A mass of hexagonal waxen cells, formed by bees, and used
      by them to hold their honey and their eggs.

   2. Any substance, as a easting of iron, a piece of worm-eaten
      wood, or of triple, etc., perforated with cells like a
      honeycomb.

   {Honeycomb moth} (Zo["o]l.), the wax moth.

   {Honeycomb stomach}. (Anat.) See {Reticulum}.

Source : WordNet®

honeycomb
     n : a framework of hexagonal cells resembling the honeycomb
         built by bees

honeycomb
     v 1: carve a honeycomb pattern into; "The cliffs were
          honeycombed"
     2: penetrate thoroughly and into every part; "the
        revolutionaries honeycombed the organization"
     3: make full of cavities, like a honeycomb