'Cresol' definitions:

Definition of 'cresol'

noun

Any of three poisonous colorless isomeric phenols; derived from coal or wood tar; used as a disinfectant [syn: cresol, methyl phenol]

From: GCIDE

Cresol \Cre"sol\ (kr[=e]"s[=o]l), n. [From Creosote.] (Chem.) Any one of three metameric substances, CH3.C6H4.OH, homologous with and resembling phenol. They are obtained from coal tar and wood tar, and are colorless, oily liquids or solids.
Note: [Called also cresylic acid.] [1913 Webster]