1. a person or thing that doubles something
2. a device or mechanism that increases something by two times
Usage: technical
3. in sports, a player who hits or scores a double
Usage: informal

Examples

• The voltage doubler circuit increased the power output.
• He was a reliable doubler in baseball, consistently hitting two-base hits.
• The recipe doubler helped her scale up the ingredients for a larger batch.
• The frequency doubler converted the signal to twice its original rate.
• She became known as a doubler after hitting multiple doubles in the game.