from The American Heritage® Dictionary of the English Language, 4th Edition
- n. See mailbox.
- n. A format for presenting movies on television that maintains the rectangular theater image on a television screen by reducing the overall image until the full width can be seen, resulting in blank space above and below the image.
- transitive v. To produce or present (film) in a letterbox format.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Transferred to home video formats while preserving the original aspect ratio, having black bars above and below the picture area.
- n. a mailbox
- v. To 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.
Sorry, no etymologies found.