Home › Words › L › letterboxletterboxletterbox means transferred to home video formats while preserving the original aspect ratio, having black bars above and below the picture area.EtymologyFrom letter + box.adjTransferred to home video formats while preserving the original aspect ratio, having black bars above and below the picture area.nounA box into which mail is put.; A collection point for mail intended for onward delivery, a secure box or receptacle for this purpose.A box into which mail is put.; A delivery point for mail, a box, compartment or slot for this purpose.e.g.“A wad of junk mail was pushed through the letterbox in the front door and dropped onto the mat.”A hidden container that holds a logbook and rubber stamp, found by following clues as a form of recreation.A rectangular hole or slot.verbTo transfer a widescreen motion picture to home video formats while preserving the original aspect ratio, with the placing of black bars above and below the picture area.To hunt for letterboxes (containers with logbook and rubber stamp) by following clues.Definitions & examples from Wiktionary (CC BY-SA 3.0).