(marketing) An order form ready to be mailed (i.e. printed on a postcard or accompanied by an envelope etc.), sent out as part of a marketing campaign.

electronic device

(gambling) The time spent playing on a gaming machine, seen as a metric.

(computing, UNIX) An abstraction for buffered access to hardware devices, especially storage, where data is read or written in arbitrary-sized blocks.

(transitive, idiomatic) to leave alone, unsupervised, without assistance.

plural of erasable programmable logic device

plural of spring-loaded camming device

An unconventional or amateur explosive weapon made from nonmilitary components, especially one used by guerillas, commandos or terrorists.

(computing, technology) Any device which employs the electric, magnetic or optical properties of a solid, especially of semiconductors.

A life vest or other device or article of clothing designed to be used by one person as an aid to remaining safely afloat in water, especially in a emergency situation.