What's different about pot, heroin and cocaine (5)
I believe the answer is:
other
'what's different' is the definition.
(similar in meaning)
'pot heroin and cocaine' is the wordplay.
'OTHER' is hidden in amongst the letters.
But, I am uncertain how the hidden word is indicated.
'about' acts as a link.
Can you help me to learn more?
(Other definitions for other that I've seen before include "Different (from those mentioned)" , "else!" , "Alternative of two" , "Remaining" , "Different, not the same one or this one" .)