Dictionary

coal tar

noun

: a black, sticky liquid made from coal that is used as a fuel and to make various products (such as soap)

Full Definition of COAL TAR

:  tar obtained by distillation of bituminous coal and used especially as an industrial fuel, in making dyes, and in the topical treatment of skin disorders

First Known Use of COAL TAR

1785

coal tar

noun \ˈkōl-\   (Medical Dictionary)

Medical Definition of COAL TAR

:  tar obtained by distillation of bituminous coal and used in the treatment of some skin diseases by direct local application to the skin

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