overhead

American Heritage® Dictionary of the English Language, Fourth Edition

1. adj. Located, functioning, or originating from above.
2. adj. Of or relating to the operating expenses of a business.
3. n. The operating expenses of a business, including the costs of rent, utilities, interior decoration, and taxes, exclusive of labor and materials.
4. n. Nautical The top surface in an enclosed space of a ship.
5. n. Something, such as a light fixture, that is located above head height.
6. n. Sports A stroke in a game, such as tennis or badminton, that is made with a hard downward motion from above the head.
7. n. An overhead projector.
8. n. The image projected by an overhead projector.
9. adv. Over or above the level of the head; high or higher up: look overhead.

Century Dictionary and Cyclopedia

1. Aloft; above; in the zenith; in the ceiling or story above.
2. Per head: properly two words.
3. Situated above or aloft.
4. So that something is over one's head: as, to be ducked overhead in the river.
5. Average; applicable to all.

Wiktionary

1. adj. located above, especially over the head
2. adj. of, or relating to the operating expenses of a business
3. adj. Kicked over one's own head.
4. n. The expense of a business not directly assigned to goods or services provided.
5. n. The items or classes of expense not directly assigned to goods or services provided.
6. n. Any cost or expenditure (monetary, time, effort or otherwise) incurred in a project or activity, which does not directly contribute to the progress or outcome of the project or activity.
7. n. Wasted money.
8. n. A smash.
9. n. The ceiling of any enclosed space below decks in a vessel
10. n. The system of overhead wires used to power electric transport, such as streetcars, trains, or buses.
11. n. data or steps of computation that is only used to facilitate the computations in the system and is not directly related to the actual program code or data being processed. E.g. network overhead is the header data that is required to route and transport data over network; fork overhead is the additional time and memory cost of creating and managing new processes within operating system.
12. n. An overhead throw.
13. n. An overhead projector.
14. n. A sheet of transparent material with an image used with an overhead projector; an overhead transparency.
15. adv. above one's head;in the sky

GNU Webster's 1913

1. adv. Aloft; above; in or attached to the ceiling or roof; in the story or upon the floor above; in the zenith.
2. n. same as overhead expenses.
3. n. A compartment on a train, bus, or airplane used for storage of luggage or accessory equipment; called also overhead compartment.
4. n. A stroke with a racket in which the ball is struck with the racket over the head, moving in a downward motion; also called overhead stroke.

WordNet 3.0

1. adv. above your head; in the sky
2. n. the expense of maintaining property (e.g., paying property taxes and utilities and insurance); it does not include depreciation or the cost of financing or income taxes
3. n. (nautical) the top surface of an enclosed space on a ship
4. adv. above the head; over the head
5. adj. located or originating from above
6. n. a transparency for use with an overhead projector
7. n. a hard return hitting the tennis ball above your head
8. n. (computer science) the processing time required by a device prior to the execution of a command
9. n. (computer science) the disk space required for information that is not data but is used for location and timing