H. P. Blavatsky

Tridandî. The name generally given to a class or sect of Sanyâsis who constantly keep in the hand a kind of club (danda) branching off into three rods at the top. The word is variously etymologized, and some give the name to the triple Brahmanical thread.

Source: H. P. Blavatsky, The Theosophical Glossary, art. Tridandi