noun
dropped letter; Japanese leaf-rolling weevil
Historically, a letter intentionally dropped on the road for someone to find; also a name for certain leaf-rolling weevils (family Attelabidae) whose leaf rolls resemble dropped letters.
昔の恋文は、落し文のように道に落ちていることもあった。
In the old days, love letters were sometimes dropped on the road like a 落し文.
落し文は葉を巻いて揺籃を作る昆虫
落し文 is a common name for insects that roll leaves to make cradles.