夏なつ虫むしなつむしMeanings1nounsummer insectGeneral term for insects that appear or are active in summer, such as cicadas, fireflies, and mosquitoes.夏なつ虫むしの声こえが聞きこえる。I can hear the sounds of summer insects.夜よるになると夏なつ虫むしが窓まどに集あつまってくる。At night, summer insects gather at the window.