adj. Located, functioning, or originating from above.adj. Of or relating to the operating expenses of a business.n. The operating expenses of a business, including the costs of rent, utilities, interior decoration, and taxes, exclusive of labor and materials.n. Nautical The top surface in an enclosed space of a ship.n. Something, such as a light fixture, that is located above head height.n. Sports A stroke in a game, such as tennis or badminton, that is made with a hard downward motion from above the head.n. An overhead projector.n. The image projected by an overhead projector.ad. Over or above the level of the head; high or higher up: look overhead.