Definitions:

1. A legendary and ritual weapon, symbolizing the properties of a diamond and a thunderbolt, or indestructibility and irresistible force. NOUN
   • In ancient texts, Indra yielded the vajra to defeat evil forces.
2. A spiritual symbol and ritual weapon in Hinduism and Buddhism, representing indestructibility, spiritual power, and enlightenment. NOUN
   • The monk held the vajra and bell as he began the ritual.