noun / verb
rosin
RAH-zun/rˈɑzʌn/
A solid resin used to improve grip, or to coat something with it.
The amber rosin rests in its holder beside the violin bow.

Etymology
The ancestor meant “pine resin,” and rosin shares its history with resin. Rosin became the name especially for the solid turpentine product used for practical purposes, including providing grip.
In context
new bows that you've just bought that don't have any rosin on it so you'll start by doing this and then little segments just making sure that you get the flat of the bow hair up against the rosin
More examples
- The pitcher pats a rosin bag to dry his hands.
- I rosin my bow whenever it starts slipping across the strings.
- She rosined her bow before the concert.
Forms
rosin · rosins · rosined · rosinned · rosining · rosinning
Similar words
- resin
- A broader category that includes liquid and synthetic substances.