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5 definitions found
 for overhead
From The Collaborative International Dictionary of English v.0.48 :

  Overhead \O`ver*head"\, adv.
     Aloft; above; in or attached to the ceiling or roof; in the
     story or upon the floor above; in the zenith.
     [1913 Webster]
           While overhead the moon
           Sits arbitress.                          --Milton.
     [1913 Webster]
     Note: Also used adjectively; as, an overhead crane, gear,
           [1913 Webster]
     Overhead engine, a vertical steam engine in which the
        cylinder stands above the crank.
     Overhead work, a general term in manufactories for
        countershafting and gearing, when overhead.
        [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  overhead \o"ver*head`\, n.
     1. same as overhead expenses.
     2. A compartment on a train, bus, or airplane used for
        storage of luggage or accessory equipment; called also
        overhead compartment.
     3. (Sports) A stroke with a racket in which the ball is
        struck with the racket over the head, moving in a downward
        motion; also called overhead stroke.
        [PJC] Overhead charges

From WordNet (r) 3.0 (2006) :

      adv 1: above your head; in the sky; "planes were flying
      2: above the head; over the head; "bring the legs together
      adj 1: located or originating from above; "an overhead crossing"
             [ant: subsurface, surface]
      n 1: the expense of maintaining property (e.g., paying property
           taxes and utilities and insurance); it does not include
           depreciation or the cost of financing or income taxes [syn:
           operating expense, operating cost, overhead, budget
      2: (computer science) the processing time required by a device
         prior to the execution of a command [syn: command processing
         overhead time, command processing overhead, command
         overhead, overhead]
      3: (computer science) the disk space required for information
         that is not data but is used for location and timing [syn:
         disk overhead, overhead]
      4: a transparency for use with an overhead projector [syn:
         viewgraph, overhead]
      5: (nautical) the top surface of an enclosed space on a ship
      6: a hard return hitting the tennis ball above your head [syn:
         overhead, smash]

From Moby Thesaurus II by Grady Ward, 1.0 :

  76 Moby Thesaurus words for "overhead":
     above, abovestairs, airward, aloft, aloof, budget, budget items,
     burden of expenditure, carrying charge, ceiling, charges, cost,
     cost of living, cost-of-living allowance, cost-of-living index,
     costs, direct costs, disbursals, distributed costs, eaves,
     elevated, expenditures, expense, expense account, expenses,
     general expenses, high, high up, housetop, in the air,
     in the clouds, indirect costs, labor costs, lantern, liabilities,
     maintenance, material costs, on high, on stilts, on the peak,
     on tiptoe, operating costs, operating expense, outlay, over,
     overhead, penthouse, plafond, prime cost, raised, replacement cost,
     ridgepole, roof, roof garden, roof-deck, roofage, roofing,
     roofpole, rooftop, rooftree, shingles, skylight, skyward, slates,
     straight up, swindle sheet, tiles, tiptoe, to the zenith, top,
     unit cost, up, upper, upstairs, upward, upwards

From The Free On-line Dictionary of Computing (30 December 2018) :

     1. Resources (in computing usually processing time or storage
     space) consumed for purposes which are incidental to, but
     necessary to, the main one.  Overheads are usually
     quantifiable "costs" of some kind.
     Examples: The overheads in running a business include the cost
     of heating the building.  Keeping a program running all the
     time eliminates the overhead of loading and initialising it
     for each transaction.  Turning a subroutine into inline
     code eliminates the call and return time overhead for each
     execution but introduces space overheads.
     2.  information, such as control, routing, and
     error checking characters, that is transmitted along with the
     user data.  It also includes information such as network
     status or operational instructions, network routing
     information, and retransmissions of user data received in
     3. Overhead transparencies or "slides" (usually 8-1/2" x 11")
     that are projected to an audience via an overhead (flatbed)

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