opium

Từ điển Oxford Advanced Learner 8th

opium BrE [ˈəʊpiəm] NAmE [ˈoʊpiəm] noun uncountable
a powerful drug made from the juice of a type of ↑poppy (= a kind of flower), used in the past in medicines to reduce pain and help people sleep. Some people take opium illegally for pleasure and can become ↑addicted to it
•opium poppies
•the opium trade

Word Origin:
[opium] late Middle English: via Latin from Greek opion ‘poppy juice’, from opos ‘juice’, from an Indo-European root meaning ‘water’.