Definition of 天一神
- (n) Ten'ichijin; Nakagami; god of fortune in Onmyoudou who descends to the northeast on the 46th day of the sexagenary cycle and completes a clockwise circuit, spending five days on each cardinal point and six days on each ordinal point, returning to heaven from the north on the 30th day of the next sexagenary cycle; travelling in the direction of Ten'ichijin is considered unlucky