Definition that contains christmas tree
- woolly adelgid an insect that feeds on hemlocks; its egg sacs are small fuzzy white balls like artificial snow on a Christmas tree
- balsam fir medium-sized fir of northeastern North America; leaves smell of balsam when crushed; much used for pulpwood and Christmas trees
- canada balsam medium-sized fir of northeastern North America; leaves smell of balsam when crushed; much used for pulpwood and Christmas trees
- abies balsamea medium-sized fir of northeastern North America; leaves smell of balsam when crushed; much used for pulpwood and Christmas trees
- balm of gilead medium-sized fir of northeastern North America; leaves smell of balsam when crushed; much used for pulpwood and Christmas trees