tip·staff /ˈtɪpˌstæf/
  金屬包頭的杖;警察;法警
  Tip·staff n.; pl. Tipstaff
  1. A staff tipped with metal.
  2. An officer who bears a staff tipped with metal; a constable.
  ◄ ►
  tipstaff
       n : staff with a metal tip carried as a sign of office by e.g. a
           bailiff or constable