phenol

n. (Chemistry) poisonous acidic compound obtained from coal tar or benzene and used mainly as a disinfectant or antiseptic, carbolic acid; any hydroxyl derivative of benzene

Phenol, also known under an older name of carbolic acid, is a toxic, colourless crystalline solid with a sweet tarry odor. Its chemical formula is C6H5OH and its structure is that of a hydroxyl group (-OH) bonded to a phenyl ring; it is thus an aromatic compound.
See more at Wikipedia.org...

Phenol /phe·nol/ 1. an extremely poisonous compound, C6H5OH, which is caustic and disinfectant; used as a pharmaceutic preservative and in dilution [more]Phenol - Community and Resources

Noun
1. any of a class of weakly acidic organic compounds; molecule contains one or more hydroxyl groups
(hypernym) organic compound
(hyponym) pyrogallol, pyrogallic acid
2. a toxic white soluble crystalline acidic derivative of benzene; used in manufacturing and as a disinfectant and antiseptic; poisonous if taken internally
(synonym) carbolic acid, hydroxybenzene, oxybenzene, phenylic acid
(hypernym) acid

n. phenol, carbolic acid, crystalline compound derived from resins or benzene (Chemistry)

adj. phenolic, (Chemistry) pertaining to carbolic acid