Chop

n.
  1. Quality; brand; as, silk of the first chop.
  2. A permit or clearance.
    3. 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.