ひるがお 昼顔 LinksSentence search for 昼顔Sentence search for ひるがおSentence search for ヒルガオKanji details for 昼 and 顔Edit in JMdict Noun1. Japanese bindweed (Calystegia japonica)Usually written using kana aloneOther formsヒルガオ Discussions Log in to talk about this word.