smæʃ above the head; over the head bring the legs together overhead above your head; in the sky planes were flying overhead a hard return hitting the tennis ball above your head located or originating from above an overhead crossing (nautical) the top surface of an enclosed space on a ship a transparency for use with an overhead projector (computer science) the disk space required for information that is not data but is used for location and timing 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 (computer science) the processing time required by a device prior to the execution of a command