laudanum /ˈlɔːdənəm/

• 1.  

  N-UNCOUNT（不可数名词） Laudanum was a medicine containing opium that was used in the past as a painkiller. 鸦片酊

  例：

  By the 19th century, vials of laudanum and raw opium were freely available.

  到了19世纪，瓶装的鸦片酊和生鸦片是很容易得到的。