Another name for Siva, meaning He who hollds the bow called #Pinaka.
Pinaka was formerly the three-forked spike of Siva. Once it fell down from the hands of Siva and on falling down took the shape of a bow. From then onwards it was used as a bow.
See under Pasupata. (Chapter 38. Sabha Parva Chapter 141, Anusasana Parva; Chapter 289. Santi Parva).