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- DictionaryO·ver·head
adverb
- 1. above the level of the head; in the sky: "a helicopter buzzed overhead"
adjective
- 1. situated 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"
noun
- 1. an overhead cost or expense: "research conducted in space requires more overhead"
- 2. a transparency designed for use with an overhead projector: "software for producing slides, charts, and overheads"