firth2 (ferth)

See frith2. fir-tree (fèr'trē), n. and a. [ II. a . Inhabiting or frequenting firs. - Fir-tree parrots, a name of the cro bills, fringilline birds of the genus Loxia . fir-wood (fer'wud), n. [Cf. AS. glo "furhwudu, pin us"; = Dan. fyrreved, fir-wood: see fir.] The wood of the fir-tree. fir-wool (fér'wül), n. A fibrous substance prepared from the leaves of various species of the genera Pinus and Abies. - Fir-wool extract, an extract from the leaves of various species of Pinus and Abies. -Fir-wool oil, a volatile oil distilled from the leaves of various species of Pinus and Abies.