device

noun

• 1a thing made or adapted for a particular purpose, especially a piece of mechanical or electronic equipment:a measuring device
• a bomb or other explosive weapon:an incendiary device
• archaic the design or look of something:works of strange device

• 2a plan, scheme, or trick with a particular aim:writing a public letter is a traditional device for signaling dissent
• a turn of phrase intended to produce a particular effect in speech or a literary work:a rhetorical device

• 3a drawing or design:the decorative device on the invitations
• an emblematic or heraldic design:their shields bear the device of the Blazing Sun