Overhead (noun)

1. The cost of running a business, in addition to the costs of producing and selling goods or services.
2. Things hanging or fixed above a person's head, such as lights or wires.
3. The area directly above a person or a thing.

Origin:

Early 19th century: from over- + head.

Examples:

1. The company's overhead costs are high.
2. She hit her head on the overhead wire.
3. The plane flew overhead.
4. The overhead projector is not working.
5. The overhead lights are too bright.