It's said to be our time (4)
I believe the answer is:
hour
'time' is the definition.
(unit of time)
'it's said to be our' is the wordplay.
'it's said to be' shows a homophone (sound like).
'our' sounds like 'HOUR'.
(Other definitions for hour that I've seen before include "Clock time" , "Time within day" , "Part of day" , "Length of time" , "(Period of) time" .)