from The American Heritage® Dictionary of the English Language, 4th Edition
- n. See blackdamp.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A damp consisting chiefly of carbon dioxide, so called for its ability to asphyxiate.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the atmosphere in a mine following an explosion; high in carbon dioxide and incapable of supporting life
So called because it causes suffocation in mines.(American Heritage® Dictionary of the English Language, Fourth Edition)
choke + damp (Wiktionary)