class A drug

noun

🔊/ˌklɑːs eɪ ˈdrʌɡ/

🔊/ˌklæs eɪ ˈdrʌɡ/

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any of various illegal drugs that are on a list of the strongest, most harmful drugs. There is a heavy punishment for anyone caught with these drugs or selling them. Class A drugs include heroin, cocaine and LSD.