[ let-er-boks ]
/ ˈlɛt ərˌbɒks /
Save This Word!

Also letter box .Chiefly British. a public or private mailbox.
Digital Technology, Television. a technique for displaying a wide-screen film or landscape video on a narrower screen by reducing its size but retaining the aspect ratio, with black bands filling the screen above and below the picture (often used attributively):letterbox videos.Compare pan and scan, pillarbox (def. 1).
verb (used with object)
Digital Technology, Television. to display (a film or video) by using the letterbox technique.
Should you take this quiz on “shall” versus “should”? It should prove to be a quick challenge!
Question 1 of 6
Which form is used to state an obligation or duty someone has?

Origin of letterbox

First recorded in 1765–75; letter1 + box1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use letterbox in a sentence

British Dictionary definitions for letterbox

letter box

noun mainly British
  1. a slot, usually covered with a hinged flap, through which letters, etc, are delivered to a building
  2. a private box into which letters, etc, are delivered
Also called: postbox a public box into which letters, etc, are put for collection and delivery
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012