tung oil

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A yellow or brownish oil extracted from the seeds of a tung tree and used as a drying agent in varnishes and paints and for waterproofing.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun An oil extracted from the seeds of the tung tree and used in varnishes and paints etc.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a yellow oil obtained from the seeds of the tung tree