Source : Webster's Revised Unabridged Dictionary (1913)

Chop \Chop\, n. [Chin. & Hind. ch[=a]p stamp, brand.]
   1. Quality; brand; as, silk of the first chop.

   2. A permit or clearance.

   {Chop dollar}, a silver dollar stamped to attest its purity.
      

   {chop of tea}, a number of boxes of the same make and quality
      of leaf.

   {Chowchow chop}. See under {Chowchow}.

   {Grand chop}, a ship's port clearance. --S. W. Williams.