Crossword Genius

Criticise second drink (5,4)

Ross

I believe the answer is:

knock back

'drink' is the definition.
(thesaurus)

'criticise second' is the wordplay.
'criticise' becomes 'knock' (I've seen this before).
'second' becomes 'back' (to second a motion is to back it).
'knock'+'back'='KNOCK BACK'

(Other definitions for knock back that I've seen before include "finish off drink quickly" , "Refuse" , "Disappointing rejection" , "Turn down - drink" , "Refusal" .)

I've seen this clue in The Telegraph.
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