methylated spirit

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

• noun A denatured alcohol consisting of a mixture of ethyl alcohol and methyl alcohol.

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

• noun denatured ethyl alcohol used as a fuel and a solvent, and usually free of taxes on alcohol. Denaturing is achieved by the addition of methyl alcohol, frequently additional materials are added to give smell and colour to the substance.

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

• noun ethyl alcohol denatured with methyl alcohol to prevent its use as an alcoholic beverage