conˌtrolled ˈsubstance BrE AmE noun [countable] law
a drug that is illegal to possess or use without permission from a doctor:
an arrest for the possession and sale of controlled substances
conˌtrolled ˈsubstance BrE AmE noun [countable] law
a drug that is illegal to possess or use without permission from a doctor:
an arrest for the possession and sale of controlled substances
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012