1. a hard, brittle substance obtained from pine trees, used especially on violin bows and by athletes to improve grip

1. to rub with rosin

Examples

• The violinist applied rosin to her bow before the performance.
• Baseball pitchers often use rosin bags to improve their grip on the ball.
• The gymnast rubbed rosin on her hands before mounting the uneven bars.
• Fresh rosin has a golden amber color and a pine-like smell.
• She needed to rosin her bow more frequently in the humid weather.
• The dancer rosined her pointe shoes to prevent slipping.
• Rock climbers sometimes use rosin to enhance their grip on holds.