A plectrum, commonly known as a pick, is a small, flat tool used to strum or pluck the strings of stringed instruments like the guitar, mandolin, or banjo. It is typically made from materials such as plastic, metal, or wood, and comes in various shapes and thicknesses, allowing musicians to achieve different sounds and playing styles. Using a plectrum can enhance the playing technique by providing more control and precision compared to using fingers alone. Musicians often choose a plectrum based on their personal preference and the specific requirements of the music they are playing, making it an essential accessory for many string players.