carbon tetrachloride

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

• noun A poisonous, nonflammable, colorless liquid, CCl₄, used in fire extinguishers and as a dry-cleaning fluid.

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

• noun organic chemistry The halogenated hydrocarbon tetrachloromethane; a toxic, non-inflammable liquid, used as a solvent, in dry cleaning and in fire extinguishers.

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

• noun a colorless nonflammable liquid used as a solvent for fats and oils; because of its toxicity its use as a cleaning fluid or fire extinguisher has declined