Lager brought round for trip (4)
I believe the answer is:
slip
'trip' is the definition.
(synonyms)
'lager brought round' is the wordplay.
'lager' becomes 'pils' (Pilsner beer).
'brought round' shows that the letters should be reversed in order.
'pils' back-to-front is 'SLIP'.
'for' acts as a link.
(Other definitions for slip that I've seen before include "Gaffe" , "Glide; petticoat" , "Mistake -- small piece of paper" , "shift" , "Lose footing or make mistake" .)