A genus (Abies) of coniferous trees, often of large size and elegant shape, some of them valued for their timber and others for their resin. The species are distinguished as the balsam fir, the silver fir, the red fir, etc. The Scotch fir is a Pinus.
- Any of various evergreen trees of the genus Abies, having single flattened needles and erect cones with deciduous scales.
- Any of several similar or related trees, such as the Douglas fir.
- The wood of these trees.