wood tar definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a dark, sticky, syruplike substance obtained by destructive distillation of wood and used in the preservation of timber, rope, etc.
wood tar definition by American Heritage Dictionary
A viscous black fluid that is a byproduct of the destructive distillation of wood and is used in pitch, preservatives, and medicines.