Home › Words › M › misboxmisbox/mɪsˈbɒks/misbox means an instance of missorting a piece of mail.misbox is pronounced /mɪsˈbɒks/.EtymologyFrom mis- + box.nounAn instance of missorting a piece of mail.verbTo put in the wrong box.e.g.“New protection for the film itself with cartridges that thread automatically, are permanently labeled, never miswound or misboxed.” — 1968, ALA Bulletin - Volume 62, page 800:To sort (mail) incorrectly.e.g.“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, The Postal Record - Volumes 5-6, page 226:Definitions & examples from Wiktionary (CC BY-SA 3.0).