Oxford Advanced American Dictionary

Definition of methylated spirit noun from the Oxford Advanced Learner's Dictionary

methylated spirit

noun
methylated spirit pronunciation English ˌmeθəleɪtɪd ˈspɪrɪt methylated spirit pronunciation American ˌmeθəleɪtɪd ˈspɪrɪt
(also methylated spirits) (also informal meths) [uncountable]
 
a type of alcohol that is not fit for drinking, used as a fuel for lighting and heating and for cleaning off dirty marks