Mail slot flap in Japanese
In Japanese
投函口のふた
tōkanguchi no futa
Definition
Definition in EnglishA movable flap covering the letter insertion opening of a postal collection container, lifted or pushed aside when a letter is inserted.
Definition in Japaneseポストの投函口を覆い、手紙を入れるときに持ち上げたり押したりして開ける板。