rosin bag
Noun: A small bag, typically made of leather or canvas, that is filled with powdered rosin. Its primary use is in baseball, where pitchers apply the rosin to their fingers and hand to dry perspiration and improve their grip on the baseball, thereby preventing the ball from slipping.
The rosin bag is a standard piece of equipment on a baseball pitcher's mound. A pitcher will pick up the bag, often between pitches, and apply the rosin dust to their throwing hand.
- The pitcher stepped off the rubber and reached for the rosin bag to get a better grip.
- A new rosin bag is placed on the ground behind the pitcher's mound at the start of each game.
- He tapped the rosin bag against his palm before winding up for the next pitch.
While primarily associated with baseball pitching, a rosin bag can be used in other sports or activities where a secure, dry grip is essential, such as by gymnasts, weightlifters, or musicians (e.g., violinists may use rosin on their bow, though not typically from a bag).
- Rosin: (Noun) The solid form of resin obtained from pines and some other plants, used to create friction. This is the substance inside the bag.
- Pitcher's bag: A less common synonym for a rosin bag.
- Grip bag
- Pitcher's rosin bag
The use of a rosin bag is legal in professional baseball. However, using foreign substances other than rosin to doctor the baseball is against the rules. The bag itself is sometimes informally called a "rosin bag" even when the material inside is a composite including rosin and other approved drying agents.
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a bag filled with rosin; used by baseball pitchers to improve their grip on the ball
