Definitions
1.nounThe expense of a business not directly assigned to goods or services provided.
2.nounThe items or classes of expense not directly assigned to goods or services provided.
3.nounAny 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.
4.nounWasted money.
5.nounA smash.
6.nounThe ceiling of any enclosed space below decks in a vessel.
7.nounA compartment above the seats for stowing luggage in a passenger aircraft.
8.nounThe system of overhead wires used to power electric transport, such as streetcars, trains, or buses.
9.nounData or steps of computation used only to facilitate the computations in the system and not directly related to the actual program code or data being processed."Network overhead is the header data that is required to route and transport data over network, whereas fork overhead is the additional time and memory cost of creating and managing new processes within operating system."
10.noun(by ellipsis) An overhead throw.
11.nounAn overhead projector.
12.nounA sheet of transparent material with an image used with an overhead projector; an overhead transparency.