wood tar


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wood tar

n.
A viscous black fluid that is a byproduct of the destructive distillation of wood and is used in pitch, preservatives, and medicines.
References in periodicals archive ?
The evidence described above suggests that the original sample was an aqueous solution of wood tar. A web search revealed that this material (Fix Liquida) was used for medicinal purposes: externally as a treatment for psoriasis and chronic eczema, but also internally for bronchitis (subacute and chronic).
The wood tars produced during firing were used for caulking ships, producing dyes and were used by the Egyptians for embalming.
Some of the substances to screen for pine and spruce allergies include colophony, oil of turpentine, and wood tars.