What does "rosin" mean?

Rosin: The hard, amber-colored resin left after distilling off the volatile oil of turpentine; colophony. Rosin oil, an oil obtained from the resin of the pine tree, -- used by painters and for lubricating machinery, etc.

Additional senses

  1. 2.To rub with rosin, as musicians rub the bow of a violin. Or with the rosined bow torment the string. Gay.

Sources