Usual time to collect Vera (7)
I believe the answer is:
average
'usual' is the definition.
(I've seen this before)
'time to collect vera' is the wordplay.
'time' becomes 'age' (age is a kind of time).
'to collect' means one lot of letters goes inside another.
'age' going around 'vera' is 'AVERAGE'.
(Other definitions for average that I've seen before include "Normal amount" , "Usual - mediocre - mean" , "It may be mean" , "Mean; standard" , "Medial" .)