<p><strong>Adverb</strong></p><ul><li>over one's head; heads; aloft; up in the air or sky, especially near the zenith: There was a cloud overhead.</li><li>so as to be completely submerged or deeply involved: to plunge overhead in water; to sink overhead in debt.</li></ul><p><strong>Adjective</strong></p><ul><li>situated, operating, or passing above, aloft, or over the head; heads: an overhead sprinkler system.</li><li>of or relating to the general cost of running a business: overhead expenses; an overhead charge.</li></ul><p><strong>Noun</strong></p><ul><li>the general, fixed cost of running a business, as rent, lighting, and heating expenses, which cannot be charged or attributed to a specific product or part of the work operation.</li><li>that part of manufacturing costs for which cost per unit produced is not readily assignable.</li><li>(in a hoistway) the distance between the last floor level served and the beam supporting the hoisting sheaves or machinery.</li><li>(in racket sports) a stroke in which the ball or shuttlecock is hit with a downward motion from above the head; heads; smash.</li><li>an overhead compartment, shelf, etc.: Pillows are in the overhead above each passenger's seat.</li><li>Also called overhead shot: a shot in which the camera is positioned above the actors, especially directly overhead.</li><li>a ceiling light in a room: Turn off the overheads when you leave.</li><li>Also called overhead projector: a projector capable of projecting images above and behind the person operating it, thus allowing a lecturer or speaker to remain facing the audience while using it.</li><li>Also called overhead projection: a picture or image projected in this manner: a lecture enhanced with overheads.</li></ul>