Definition from Wiktionary, the free dictionary
honeycomb (plural honeycombs)
- A structure of hexagonal cells made by bees primarily of wax, to hold their larvae and for storing the honey to feed the larvae and to feed themselves during winter.
- Any structure resembling a honeycomb.
- The wood porch was a honeycomb of termite tunnels before we replaced it.
- 1797 Adams, John, (Letter from John Adams to Uriah Forrest, June 20, 1797), compiled in Thomas Jefferson Encyclopedia, at http://wiki.monticello.org/mediawiki/index.php/Notable_Comments_on_Jefferson_(Contemporary)
- [there is in Jefferson]...evidence of a mind soured, yet seeking for popularity, and eaten to a honeycomb with ambition....
- (construction) voids left in concrete resulting from failure of the mortar to effectively fill the spaces among coarse aggregate particles.
- (aviation) Manufactured material used manufacture light, stiff structural components using a sandwich design.
- (solar cell) texturing the surface of a cell to increase its surface area and capture more sun. 
structure of cells made by bees
any resembling structure
voids left in concrete
aviation: light material
solar cell surface texture
- ^ http://www.renewableenergyworld.com/rea/blog/post/2009/07/creating-not-overly-disruptive-changes-in-solar-manufacturing?cmpid=WNL-Friday-July17-2009
- To riddle something with holes, especially in such a pattern.
- Termites will honeycomb a porch made of untreated pine.