Play on words to dig somewhere in India (6)
I believe the answer is:
punjab
'somewhere in india' is the definition.
'play on words to dig' is the wordplay.
'play on words' becomes 'pun' ('pun' can be a synonym of 'play on words').
'to dig' becomes 'jab' ('jab' can be a synonym of 'dig').
'pun'+'jab'='PUNJAB'
(Other definitions for punjab that I've seen before include "Province in both India and Pakistan" , "Region of NW India and NE Pakistan, chief city Lahore" , "Province of Pakistan, capital Lahore" , "India/Pakistan border region" , "Indian state" .)