A rectangular hole or slot.
A hidden container that holds a logbook and rubber stamp, found by following clues as a form of recreation.
A delivery point for mail, a box, compartment or slot for this purpose.
A collection point for mail intended for onward delivery, a secure box or receptacle for this purpose.
Transferred to home video formats while preserving the original aspect ratio, having black bars above and below the picture area.
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.
To hunt for letterboxes (containers with logbook and rubber stamp) by following clues.
Any similarly shaped container.
A gutter under the eaves of a building; an eaves trough.
A linear atmospheric depression associated with a weather front.
A long, narrow container, open on top, for feeding or watering animals.
A rectangular container used for washing or rinsing clothes.
A long, narrow depression between waves or ridges; the low portion of a wave cycle.
A channel for conveying water or other farm liquids (such as milk) from place to place by gravity; any ‘U’ or ‘V’ cross-sectioned irrigation channel.
A short, narrow canal designed to hold water until it drains or evaporates.
low turning point or a local minimum of a business cycle
To eat in a vulgar style, as if from a trough.