Tack may refer to:

  • A type of cut nail, used in upholstery, shoe making and saddle manufacture
  • Horse tack, harness and equipment to allow horse-back riding
  • Tack (sewing) (also baste or pin), quick, temporary stitching intended to be removed
  • Hardtack, a hard cracker or biscuit used for food on sea voyages and during the American Civil War
  • Thumbtack or drawing pin, a short nail or pin easily placed and removed by hand
  • Augustus Vincent Tack (1870-1949), American painter
  • In sailing:
    • A tack as a part of the tacking maneuver; in which a sailing boat turns its bow through the wind
    • Tack (sailing), the lower corner of a sail's leading edge
    • Tack (square sail), a type of rigging unique to square sails
  • Scottish lease, as held by a tacksman.
  • Blu Tack, a reusable putty-like pressure-sensitive adhesive used for attaching paper items to walls
  • Tack weld, a specific short and often temporary type of weld.

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Famous quotes containing the word tack:

    For hours, in fall days, I watched the ducks cunningly tack and veer and hold the middle of the pond, far from the sportsman;... but what beside safety they got by sailing in the middle of Walden I do not know, unless they love its water for the same reason that I do.
    Henry David Thoreau (1817–1862)