A heartwood of trees, impregnated with resin, useful in the manufacture of pitch and tar.
{{quote-journal|en|date=May 20, 2009|author=Oliver Schwaner-Albright|title=Grilling Over Wood as a Sweaty, Smoky Sport|work=New York Times|url=http://www.nytimes.com/2009/05/20/dining/20fire.html