misbox /mɪsˈbɒks/verb 2noun 1forms 3 verb2 •To put in the wrong box.New protection for the film itself with cartridges that thread automatically, are permanently labeled, never miswound or misboxed. — 1968 •To sort (mail) incorrectly.On the nineteenth of this month the letter was misboxed to you and failing to see the error you took it out and delivered it at 1892 Maxwell avenue, without any inquiry. — 1892 noun1 •An instance of missorting a piece of mail. formsmisboxed · misboxing · misboxes