one of the bullet train services running on the Tōkaido/Sanyō shinkansen / 光: a place name, such as that of Hikari City in Yamaguchi Prefecture / 光, 光璃, 光莉, 光梨: a female given name / 光: a surname

(parts of Kyūshū) in what way

in the context of any competitive sport, having more wins than losses / (sumo) kachi-koshi

(slang) Used to mock someone who has failed at a task, serve someone right