red fir
/ˌrɛd ˈfəː/noun
1Any of various other coniferous trees; (in later use) specifically either of two silver firs of western North America, Abies magnifica and A. amabilis.
2The Douglas fir, Pseudotsuga menziesii. Also: the wood of this tree, especially when reddish in colour (as a result of growing conditions). Compare yellow fir. Now rare.
Origin
Early 17th century (in an earlier sense). From red + fir.