Christmas tree

noun

1. Australian tree or shrub with red flowers; often used in Christmas decoration
2. a terrestrial evergreen shrub or small tree of western Australia having brilliant yellow-orange flowers; parasitic on roots of grasses
3. tall timber tree of central and southern Europe having a regular crown and grey bark
4. medium to tall fir of western North America having a conic crown and branches in tiers; leaves smell of orange when crushed
5. an ornamented evergreen used as a Christmas decoration