operating with minimal human intervention; independent of external control; "automatic transmission"; "a budget deficit that caused automatic spending cuts"
like the unthinking functioning of a machine; "an automatic `thank you'"; "machinelike efficiency"
without volition or conscious control; "the automatic shrinking of the pupils of the eye in strong light"; "a reflex knee jerk"; "sneezing is reflexive"
air passage provided by a retractable device containing intake and exhaust pipes; permits a submarine to stay submerged for extended periods of time
breathing device consisting of a bent tube fitting into a swimmer's mouth and extending above the surface; allows swimmer to breathe while face down in the water
armament consisting of a long cylindrical self-propelled underwater projectile that detonates on contact with a target
a small explosive device that is placed on a railroad track and fires when a train runs over it; the sound of the explosion warns the engineer of danger ahead
a small firework that consists of a percussion cap and some gravel wrapped in paper; explodes when thrown forcefully against a hard surface
an explosive device that is set off in an oil well (or a gas well) to start or to increase the flow of oil (or gas)
any clever maneuver; "he would stoop to any device to win a point"; "it was a great sales gimmick"; "a cheap promotions gimmick for greedy businessmen"
an instrumentality invented for a particular purpose; "the device is small enough to wear on your wrist"; "a device intended to conserve water"
an emblematic design (especially in heraldry); "he was recognized by the device on his shield"
any ornamental pattern or design (as in embroidery)
something in an artistic work designed to achieve a particular effect