昼顔 ひるがお Also written ヒルガオ Meanings Noun Japanese bindweed (Calystegia japonica) Kanji 昼 noon. Read as ひる. 顔 face. Read as かお. Words containing 昼顔 平日昼顔妻 (へいじつひるがおづま) housewife having an affair while her husband is at work Jinuma: Japanese Dictionary · Word lists