'Joint-fir' definitions:

Definition of 'Joint-fir'

From: GCIDE

Joint-fir \Joint"-fir`\, n. (Bot.) A genus (Ephedra) of leafless shrubs, with the stems conspicuously jointed; -- called also shrubby horsetail. There are about thirty species, of which two or three are found from Texas to California. [1913 Webster]