Maybe add alcohol to large one (4)
I believe the answer is:
lace
'maybe add alcohol' is the definition.
I can't judge whether this definition defines the answer.
'large one' is the wordplay.
'large' becomes 'L' (eg in clothes sizes).
'one' becomes 'ace' (ace has a value of one in some card games).
'l'+'ace'='LACE'
'to' acts as a link.
Can you help me to learn more?
(Other definitions for lace that I've seen before include "Famous play ''Arsenic and Old . . . .''" , "A fabric; add alcohol to" , "Fabric made in openwork design" , "Do up (shoe, etc)" , "Fortify with spirits; open fabric" .)