- a technique for displaying a video recorded in portrait orientation on a wider screen by reducing its size but retaining the aspect ratio, with black bands filling the screen to the right and left of the picture (often used attributively):pillarbox format.
- to display (a film or video) by using the pillarbox technique.
- a pillarlike box in which letters are deposited for collection by mail carriers; mailbox.
- (in Britain) a red pillar-shaped public letter box situated on a pavement
- characteristic of a pillar box (in the phrase pillar-box red)
