Mean to declare present point in life (7)
I believe the answer is:
average
'mean' is the definition.
(I know that mean can be written as average)
'declare present point in life' is the wordplay.
'declare' becomes 'aver' (averring is a kind of declaring).
'present point in life' becomes 'age' (someone's current age).
'aver'+'age'='AVERAGE'
'to' acts as a link.
(Other definitions for average that I've seen before include "Arithmetic mean" , "Moderate" , "nothing special" , "Mean - typical" , "representative figure?" .)