The meaning of Fir and additional information.

Fir(n.) 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.

Firring(n.) See Furring.