1situated above the level of the head:the sun was directly overhead
2(of a driving mechanism) above the object driven:an overhead cam four-cylinder engine
3 [attributive] (of a cost or expense) incurred in the upkeep or running of a plant, premises, or business and not attributable to individual products or items:government departments generally baulk at paying full overhead costs
1 (usually overheads) an overhead cost or expense:overheads, such as lighting, equipment, and any little extras, are paid for out of a centralized fund
2a transparency designed for use with an overhead projector:software for producing slides, charts, and overheads
3an overhead compartment, especially on an aircraft:passengers get up to fiddle with their luggage in the overheads
overhead in other Oxford dictionaries
Definition of overhead in the US English dictionary
