overhead

Concise Oxford English Dictionary © 2008 Oxford University Press:
overhead/əʊvəˈhed/

▶adverb above one's head; in the sky. ▶adjective

• 1 situated overhead.

• 2 (of a driving mechanism) above the object driven.

• 3 (of an expense) incurred in the upkeep or running of premises or a business.

▶noun

• 1 an overhead cost or expense.

• 2 a transparency for use with an overhead projector.

• 3 an overhead compartment, especially on an aircraft.