rosin

rosin
[ˈrɒzɪn]
noun

[mass noun]resin, especially the solid amber residue obtained after the distillation of crude turpentine oleoresin, or of naphtha extract from pine stumps. It is used in adhesives, varnishes, and inks and for treating the bows of stringed instruments
松香，松脂

(rosined, rosining)

[with obj.]rub (something, especially a violin bow or string) with rosin
用松香擦（或涂）（某物，尤指小提琴的弓或弦）

派生
rosiny
adjective
语源