Oil of birch

Related to Oil of birch: birch beer
An oil obtained from the bark of the common European birch (Betula alba), and used in the preparation of genuine (and sometimes of the imitation) Russia leather, to which it gives its peculiar odor.
An oil prepared from the black birch (Betula lenta), said to be identical with the oil of wintergreen, for which it is largely sold.

See also: Birch, Birch