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