Late 18th century. In some forms from French ravanastron from Tamil irāvaṇāstam and Telugu rāvaṇahastamu kind of fiddle from Sanskrit rāvaṇahasta forearm of Ravana from Rāvaṇa Ravana, the name of a demon and legendary king of Ceylon (now Sri Lanka) + hasta forearm, hand. In some forms directly from Sanskrit rāvaṇahasta.