The Phurba is triple sided Tibetan ritual dagger or stake. Tibetan meaning for Phurba refers to a stake used for tethering or a peg used for securing a tent. While other objects of similar shape can be considered Phurba, it is usually a knife with three distinct segments, one of which is a characterstic three - sided blade or point. The segments and the triple blade represent the three spirit worlds, while the Phurba as a whole symbolizes the "worlds axis" bring all three worlds together. The Phurba also Phurpa is a ritual dagger (not meant to actually hurt in any way a sentient living being, the blade is not sharp). It is used to fight evil spirits.