Meaning of OVERHEAD in English
adv., adj., & n.
1. above one's head.
2 in the sky or in the storey above.
1. (of a driving mechanism etc.) above the object driven.
2 (of expenses) arising from general running costs, as distinct from particular business transactions.
--n. (in pl. or US in sing.) overhead expenses.
Oxford English vocab. Оксфордский английский словарь. 2012