Source : Webster's Revised Unabridged Dictionary (1913)

Strap \Strap\, n. [OE. strope, AS. stropp, L. stroppus,
   struppus, perhaps fr. Gr. ? a band or cord, fr. ? to twist,
   to turn (cf. {Strophe}). Cf. {Strop} a strap, a piece of
   rope.]
   1. A long, narrow, pliable strip of leather, cloth, or the
      like; specifically, a strip of thick leather used in
      flogging.

            A lively cobbler that . . . had scarce passed a day
            without giving her [his wife] the discipline of the
            strap.                                --Addison.

   2. Something made of such a strip, or of a part of one, or a
      combination of two or more for a particular use; as, a
      boot strap, shawl strap, stirrup strap.

   3. A piece of leather, or strip of wood covered with a
      suitable material, for sharpening a razor; a strop.

   4. A narrow strip of anything, as of iron or brass.
      Specifically:
      (a) (Carp. & Mach.) A band, plate, or loop of metal for
          clasping and holding timbers or parts of a machine.
      (b) (Naut.) A piece of rope or metal passing around a
          block and used for fastening it to anything.

   5. (Bot.)
      (a) The flat part of the corolla in ligulate florets, as
          those of the white circle in the daisy.
      (b) The leaf, exclusive of its sheath, in some grasses.

   6. A shoulder strap. See under {Shoulder}.

   {Strap bolt}, a bolt of which one end is a flat bar of
      considerable length.

   {Strap head} (Mach.), a journal box, or pair of brasses,
      secured to the end of a connecting rod by a strap. See
      Illust. of {Gib and key}, under {Gib}.

   {Strap hinge}, a hinge with long flaps by which it is
      fastened, as to a door or wall.

   {Strap rail} (Railroads), a flat rail formerly used.

Strap \Strap\, v. t. [imp. & p. p. {Strapped}; p. pr. & vb. n.
   {Strapping}.]
   1. To beat or chastise with a strap.

   2. To fasten or bind with a strap. --Cowper.

   3. To sharpen by rubbing on a strap, or strop; as, to strap a
      razor.

Source : WordNet®

strap
     v 1: tie with a strap [ant: {unstrap}]
     2: beat severely with a whip or rod; "The teacher often flogged
        the students"; "The children were severely trounced" [syn:
         {flog}, {welt}, {whip}, {lather}, {lash}, {slash}, {trounce}]
     3: sharpen with a strap; "strap a razor"
     4: secure (a sprained joint) with a strap
     [also: {strapping}, {strapped}]

strap
     n 1: an elongated leather strip (or or strip of similar material)
          for binding things together or holding something in
          position
     2: hanger consisting of a loop of leather suspended from the
        ceiling of a bus or train; passengers hold onto it
     3: a band that goes over the shoulder and supports a garment or
        bag [syn: {shoulder strap}]
     4: whip consisting of a strip of leather used in flogging
     [also: {strapping}, {strapped}]