subs. (clerical).—A M.B. WAISTCOAT (q.v.).

1

  1844.  Puck, 13.

        It is true that the wicked make sport
  Of our PYGOSTOLES, as we go by.

2

  1886.  Graphic, 10 April, 39. The M.B. coat, otherwise known as a PYGOSTOLE.

3