Definition of "colophony" [col•o•pho•ny]

• Rosin; the residue left after the distillation of oil of turpentine from liquid resin. Used in pharmaceutical preparations, soldering fluxes, and by violinists. (noun)

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• "By this process, the solid resin of colophony is split up into water, various resinic acids or naphthas, and resin oils of various specific gravities and consistencies, all of which are separated from each other into separate containers which are ready to receive them."
• "Iron to be buried in damp earth may be painted with a mixture of 100 parts of resin (colophony), 25 parts of gutta-percha, and 50 parts of paraffin, to which 20 parts of magnesia and some mineral oil have been added."
• "Its pine-trees supplied a rosin or colophony highly valued for the strings of musical instruments."