'Fir tree' definitions:

Definition of 'fir tree'

From: WordNet
noun
Any of various evergreen trees of the genus Abies; chiefly of upland areas [syn: fir, fir tree, true fir]

Definition of 'Fir tree'

From: GCIDE
  • Fir tree \Fir" tree`\ (f[~e]r" tr[=e]`). See Fir. [1913 Webster]