Source : Webster's Revised Unabridged Dictionary (1913)

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}]

strapped
     See {strap}