String instruments are a type of musical instrument that produce sound by the vibration of strings. The crossword solutions for the term string instrument include LUTE (4 letters), VIOL (4 letters), VIOLA (5 letters), mandolin (8 letters), CELLO (5 letters), and VIOLIN (6 letters). The LUTE is a plucked string instrument with a pear-shaped body, a long neck, and a fretted fingerboard. The VIOL is a bowed string instrument that was popular in the Renaissance and Baroque eras. The VIOLA is a bowed string instrument similar to the VIOLIN but larger in size and with a deeper sound. The mandolin is a plucked string instrument with a teardrop-shaped body and four pairs of strings. The CELLO is a bowed string instrument with a large body and four strings. The VIOLIN is a bowed string instrument with a small body and four strings.