Definition of けい
- (n) imperial capital (esp. Kyoto)
- final word of an iroha-uta
- 10^16; 10,000,000,000,000,000; ten quadrillion (American); (obs) ten thousand billion (British)
- (n) qing (ancient Chinese musical instrument; suspended gong-like chime shaped like an inverted 'v'; orig. made of stone)