Also found in: Thesaurus, Encyclopedia.
a. Any of various evergreen trees of the genus Abies, having linear flattened needles and erect cones with deciduous scales.
b. Any of several similar or related trees, such as the Douglas fir.
2. The wood of any these trees.
1. (Plants) of, relating to, or made from fir trees
2. (Plants) abounding in or dominated by firs
adj. -ri•er, -ri-est.
1. of or pertaining to firs.
2. made of fir.
3. abounding in firs.