The Collaborative International Dictionary of English v.0.48:
Phenol \Phe"nol\ (f[=e]"n[=o]l; 277), n. [Gr. fai`nein to show +
-ol: cf. F. ph['e]nol.] (Chem.)
1. A white or pinkish crystalline substance, C6H5OH,
produced by the destructive distillation of many organic
bodies, as wood, coal, etc., and obtained from the heavy
oil from coal tar.
Note: It has a peculiar odor, somewhat resembling creosote,
which is a complex mixture of phenol derivatives. It is
of the type of alcohols, and is called also phenyl
alcohol, but has acid properties, and hence is
popularly called carbolic acid, and was formerly
called phenic acid. It is a powerful caustic poison,
and in dilute solution has been used as an antiseptic.
2. Any one of the series of hydroxyl derivatives of which
phenol proper is the type.
Glacial phenol (Chem.), pure crystallized phenol or
Phenol acid (Chem.), any one of a series of compounds which
are at once a derivative of phenol and an organic acid;
thus, salicylic acid is a phenol acid.
Phenol alcohol (Chem.), any one of series of derivatives of
phenol and carbinol which have the properties of both
combined; thus, saligenin is a phenol alcohol.
Phenol aldehyde (Chem.), any one of a series of compounds
having both phenol and aldehyde properties.
Phenol phthalein. See phenolphthalein.