Crossword Genius

Pass maybe from twisted doctor on bad acid (2,4)

Ross

I believe the answer is:

id card

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'pass maybe' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.

'twisted doctor on bad acid' is the wordplay.
'twisted' shows that the letters should be reversed in order.
'doctor' becomes 'dr' (abbreviation).
'on' is a charade indicator (letters next to each other).
'bad' indicates an anagram.
'dr' back-to-front is 'rd'.
'acid' with letters rearranged gives 'idca'.
'rd' put after 'idca' is 'ID CARD'.

'from' is the link.

Can you help me to learn more?

(Other definitions for id card that I've seen before include "Identification document" , "It says who the bearer is" , "Proof of personal details" .)

I've seen this clue in The Independent.
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