ROSIN

I. noun Etymology: Middle English, from Anglo-French reisine, ~e resin Date: 13th century a translucent amber-colored to almost black brittle friable resin that is obtained from the oleoresin or deadwood of pine trees or from tall oil and used especially in making varnish, II. transitive verb (~ed; ~ing) Date: 15th century to rub or treat (as the bow of a violin) with ~