Definition & Meaning of "string instrument"

What is a "string instrument"?

A string instrument is a type of musical instrument that produces sound by vibrating strings. The strings can be made of materials such as steel, nylon, or gut and are typically stretched across a resonating body. Sound is created either by plucking, strumming, or bowing the strings, or by striking them in some cases. Examples of string instruments include the violin, guitar, and cello. These instruments are known for their wide range of tones and expressive capabilities.