present participle of letterbox

A hobby in which participants attempt to locate small boxes containing rubber stamps by following clues.

A collection point for mail intended for onward delivery, a secure box or receptacle for this purpose. / A delivery point for mail, a box, compartment or slot for this purpose.

(film) Transferred to home video formats while preserving the original aspect ratio, having black bars above and below the picture area.

(film) 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.

plural of letterbox

simple past tense and past participle of letterbox

One who takes part in the hobby of letterboxing.

plural of letterboxer