creosote

noun

1. (countable, uncountable)A pale yellow oily liquid, containing phenols and similar compounds, obtained by the destructive distillation of wood tar, once used medicinally.
2. (countable, uncountable)A similar brown liquid obtained from coal tar used as a wood preservative.
3. (countable)The creosote bush.

   “On Shaw Butte, as elsewhere in the Phoenix area, creosotes are abundant, producing a plethora of small yellow flowers in late March and April.”

4. (countable, uncountable)A flammable black porous brittle glassy byproduct of wood burning, typically formed inside chimneys.

verb

1. (transitive)To apply creosote.

   “As the fence is exposed he will creosote it for protection.”

   “Agnes was leaning over the creosoted garden gate …”