Overhead

(computer science) the processing time required by a device prior to the execution of a command

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

a transparency for use with an overhead projector

a hard return hitting the tennis ball above your head

(computer science) the disk space required for information that is not data but is used for location and timing

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

located or originating from above