rosin oil

noun

Definition of rosin oil 

: an oily liquid obtained by destructive distillation of rosin and composed principally of hydrocarbons with some resin acids especially : the viscous fraction that boils higher than rosin spirit, that when crude is dark-colored and fluorescent and has a sharp odor, and that is used chiefly in making lubricating greases and printing inks, in impregnating paper coverings for electric cables, and in compounding with other oils

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First Known Use of rosin oil

1844, in the meaning defined above

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The first known use of rosin oil was in 1844

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