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1 [uncountable] American English overheads [plural] British EnglishBB money spent regularly on rent, insurance, electricity, and other things that are needed to keep a business operating : 
Their offices are in London so the overheads are very high.
Their offices are in London so the overheads are very high.2TC [countable] a piece of transparent material used with an overhead projector to show words, pictures etc
