balsam fir

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

• noun A North American evergreen tree (Abies balsamea) having a pyramidal shape and flattened needles. It is used for pulpwood and yields Canada balsam.

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

• noun A North American species of fir tree (Abies balsamea).

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

• noun medium-sized fir of northeastern North America; leaves smell of balsam when crushed; much used for pulpwood and Christmas trees