Love to tuck into beer for a moment (5)
I believe the answer is:
point
'a moment' is the definition.
(thesaurus)
'love to tuck into beer' is the wordplay.
'love' becomes 'o' (love means zero in tennis).
'to tuck into' means one lot of letters goes inside another.
'beer' becomes 'pint'.
'o' going into 'pint' is 'POINT'.
'for' acts as a link.
(Other definitions for point that I've seen before include "Full stop; cricket position" , "Indicate; promontory" , "Aim, full stop" , "Use" , "Indicate - off-side fielding position" .)