rosin
ˈrɒzɪn/Submit
noun
noun: rosin; plural noun: rosins
1.
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.
"they will also supply crushed colophony rosin"
verb
verb: rosin; 3rd person present: rosins; past tense: rosined; past participle: rosined; gerund or present participle: rosining
1.
rub (something, especially a violin bow or string) with rosin.
"island musicians are rosining their bows"