Real Dictionary

rosin in American English
the hard, brittle resin, light-yellow to almost black in color, remaining after oil of turpentine has been distilled from crude turpentine or obtained from chemically treated pine stumps: it is used in making varnish, inks, soaps, insulation, etc., and is
to rub with rosin
noun: the yellowish to amber, translucent, hard, brittle, fragmented resin left after distilling the oil of turpentine from the crude oleoresin of the pine: used chiefly in making varnishes, varnish and paint driers, printing inks, and for rubbing on the bows o
transitive verb: to cover or rub with rosin

rosin in British English
noun: a translucent brittle amber substance produced in the distillation of crude turpentine oleoresin and used esp in making varnishes, printing inks, and sealing waxes and for treating the bows of stringed instruments