The term Renaissance Fiddle refers to the Rebec, a bowed string instrument that was popular in Europe during the Renaissance period. The Rebec is a small, pear-shaped instrument with three strings and a fretted fingerboard. It was used in folk music, courtly music, and religious music of the time. The Rebec was an important part of the musical culture of the Renaissance period, and its influence can still be heard in modern music today.