rubber tree

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

• noun A tropical South American tree (Hevea brasiliensis) widely cultivated especially in Asia for its latex, which is collected from slashes made in the bark and used to make commercial rubber.
• noun Any of several other trees having similar latex or sap.

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

• noun A tropical South American tree, Hevea brasiliensis, that is the source of latex.

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

• noun small genus of South American trees yielding latex