Another name for the urumi sword. The urumi is a sword with a flexible whip-like blade from India. Originating in Kerala southern state of India and Sri Lanka, it is thought to have existed as far back as the Maurya dynasty. It is considered one of the most difficult weapons to master due to the risk of injuring oneself. It is treated as a steel whip, and therefore requires prior knowledge of that weapon. For this reason, the urumi is always taught last in Kalaripayattu, the South Indian martial art from the state of Kerala. (source)