Crossword Genius

Pass out, seeing reptiles (4)

Ross

I believe the answer is:

asps

'reptiles' is the definition.
(asp is a kind of reptile)

'pass out' is the wordplay.
'out' is an anagram indicator (out can mean wrong or inaccurate).
'pass' is an anagram of 'ASPS'.

'seeing' acts as a link.

(Other definitions for asps that I've seen before include "people" , "Cleopatra's cobras" , "Poisonous creepers" , "Poplars" , "poisonous things" .)

I've seen this clue in The Daily Express.
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