Past taking a turn (3)
I believe the answer is:
ago
'past' is the definition.
(I've seen this before)
'a turn' is the wordplay.
'turn' becomes 'go' (a person's move in a board game).
'a'+'go'='AGO'
'taking' is the link.
(Other definitions for ago that I've seen before include "(Years) before the present time" , "Time past" , "Gone, past, since" , "Back (in time)" , "Earlier, gone by" .)