wood tar
noun
Definition of wood tar
: tar obtained by the destructive distillation of wood either as a deposit from pyroligneous acid or as a residue from the distillation of the acid or of wood turpentine and used in the crude state as fuel or for preserving rope and wood and for caulking or fractionated to yield creosote, oils, and pitch — compare pine tar
From the M-W Editors
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