christmas tree Meaning, Definition & Usage

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

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