- fir, fir tree, true fir - any of various evergreen trees of the genus Abies; chiefly of upland areas
--1 is a kind of conifer, coniferous tree
--1 is a member of Abies, genus Abies
--1 has parts: fir cone
--1 has substances: fir
--1 has particulars:silver fir; Santa Lucia fir, bristlecone fir, Abies bracteata, Abies venusta