"device" in the noun sense
an instrumentality invented for a particular purpose
"the device is small enough to wear on your wrist"
"a device intended to conserve water"
something in an artistic work designed to achieve a particular effect
3. device, gimmick, twist
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"
any ornamental pattern or design (as in embroidery)
an emblematic design (especially in heraldry
"he was recognized by the device on his shield"
Source: WordNet® (An amazing lexical database of English)
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