Noun

1. 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.
2. 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....

3. voids left in concrete resulting from failure of the mortar to effectively fill the spaces among coarse aggregate particles.
4. texturing the surface of a cell to increase its surface area and capture more sun.

Verb

1. To riddle something with holes, especially in such a pattern.

   Termites will honeycomb a porch made of untreated pine.