Treats a violin bow

• Varnish ingredients
• Rubs with a sticky substance
• Fiddler's applications
• Violinists' supply
• Violinists' applications
• Bow applications
• Prepares, as a violin bow
• Treats, as a bow
• Prepares to bow

Wiktionary Word definitions in Wiktionary
n. (plural of rosin English) vb. (en-third-person singular of: rosin )