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

WordNet

Definitions
  1. a small evergreen tree, set up indoors, to be decorated with bonbons, presents, etc., and illuminated on Christmas eve.

Webster 1913