Main Entry: ¹ros·in

Pronunciation: \ˈrä-z^ən, ˈrȯ-, dial ˈrȯ-zəm\

Function: noun

Etymology: Middle English, from Anglo-French reisine, rosine 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