hard drug
US /ˌhɑːrd ˈdrʌɡ/
UK /ˌhɑːrd ˈdrʌɡ/

1.
narkoba keras
an illegal drug that is addictive and seriously harmful, such as heroin or cocaine
:
•
The police seized a large quantity of hard drugs during the raid.
Polisi menyita sejumlah besar narkoba keras selama penggerebekan.
•
He was arrested for dealing hard drugs.
Dia ditangkap karena memperdagangkan narkoba keras.