carpenter ant

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Any of various large ants of the genus Camponotus that nest in and are destructive to wood.

from The Century Dictionary.

• noun Any wood-working ant, such as Camponotus æthiops, Lasius flavus, or L. fuliginosus of Europe, or C. Pennsylvanicus of America.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Any of several large ants, of the genus Camponatus, found in North America and northern China, that build nests in dead wood

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun ant that nests in decaying wood in which it bores tunnels for depositing eggs