overhead

(noun) 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. Synonyms: operating expense, operating cost, budget items.

(noun) (computer science) the processing time required by a device prior to the execution of a command. Synonyms: command processing overhead time, command processing overhead, command overhead.

(noun) (computer science) the disk space required for information that is not data but is used for location and timing. Synonyms: disk overhead.

(noun) a transparency for use with an overhead projector. Synonyms: viewgraph.

(noun) (nautical) the top surface of an enclosed space on a ship.

(noun) a hard return hitting the tennis ball above your head. Synonyms: smash.

(adj) located or originating from above. Synonyms: overhead (vs. surface) (vs. subsurface). Example: "An overhead crossing."

(adv) above your head; in the sky. Example: "Planes were flying overhead."

(adv) above the head; over the head. Example: "Bring the legs together overhead."