Balsam fir trees in a Christmas tree lot.
balsam fir 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 flat-needled evergreen tree (Abies balsamea) of the pine family, native to Canada and the N U.S.: it yields Canada balsam and a soft wood, and is used as a Christmas tree
balsam fir definition by American Heritage Dictionary
A North American tree (Abies balsamea) having a pyramidal shape and flattened needles. It is widely used as a Christmas tree and yields Canada balsam and pulpwood.