noun
1. a hard return hitting the tennis ball above your head
Synonym: smash
2. (nautical) the top surface of an enclosed space on a ship
3. a transparency for use with an overhead projector
Synonym: viewgraph
4. (computer science) the disk space required for information that is not data but is used for location and timing
Synonym: disk overhead
5. 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
Synonym: operating expenseoperating costbudget items
6. (computer science) the processing time required by a device prior to the execution of a command
Synonym: command processing overhead timecommand processing overheadcommand overhead
adj
1. located or originating from above
e.g. an overhead crossing
adv
1. above the head
over the head
e.g. bring the legs together overhead
2. above your head
in the sky
e.g. planes were flying overhead