囧:
1. Anciently the same as "冏".
(古同“冏”.)
2. Adjective meaning bright or luminous.
(形容词 光明、明亮。)
"Yupian.囧部": "囧, 大明也."
(《玉篇.囧部》:「囧,大明也。」)
"Selections of Literature, by Jiang Yan, Miscellaneous Poetry, by Zhang Tingwei": "囧囧秋月明,凭轩咏尧老."
(《文选.江淹.杂体诗.张廷尉》:「囧囧秋月明,凭轩咏尧老。」)
Li Shan's annotation cites "Cangjie Pian": "囧, 大明也."
(李善注引〈苍颉篇〉:「囧,大明也。」)