laudanum
noun
[ ˈlɔːd(ə)nəm ]
• an alcoholic solution containing morphine, prepared from opium and formerly used as a narcotic painkiller.
Origin:
mid 16th century (applied to various preparations containing opium): modern Latin, the name given by Paracelsus to a costly medicament of which opium was believed to be the active ingredient; perhaps a variant of Latin ladanum (see ladanum).
