During dry spell, love going for a drink (7)
I believe the answer is:
draught
'a drink' is the definition.
(draught is a kind of drink)
'during dry spell love going for' is the wordplay.
'during' is an insertion indicator.
'dry spell' becomes 'drought' (a period of low rainfall).
'love' becomes 'o' (love means zero in tennis).
'going' is a deletion indicator.
'for' becomes 'a' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'drought' with 'o' removed is 'drught'.
'drught' going around 'a' is 'DRAUGHT'.
Can you help me to learn more?
(Other definitions for draught that I've seen before include "Alcohol drawn from a keg" , "man that may be crowned" , "drink needed" , "(Of beer) sold from the cask" , "Water depth; served from a cask" .)