Device (noun)

1. A piece of equipment or machinery.
2. A scheme or trick used for a particular purpose.
3. A distinctive emblem or design used to identify a family, organization, or cause.

Origin:

Middle english, from anglo-norman devis, from latin divisum division, something divided, device, from neuter past participle of dividere to divide.

Examples:

1. He invented a new device to measure air pressure.
2. The device was designed to prevent theft.
3. The company's logo is a well-known device.
4. She used a device to open the locked door.
5. The device has many advanced features.