One repeated the time (6)
I believe the answer is:
eleven
'one repeated the time' is the definition.
I can't tell whether this definition defines the answer.
'one repeated the time' is the wordplay.
'one repeated' becomes 'el' (I can't justify this - if you can you should give a lot more credence to this answer).
'the time' becomes 'even' (I have seen 'time of day' mean 'even' so perhaps 'time' could also mean 'even').
'el'+'even'='ELEVEN'
Can you help me to learn more?
(Other definitions for eleven that I've seen before include "Number killed in the Peterloo massacre" , "Number in a cricket team" , "XI as Roman numeral" , "'Legs' bingo number" , "Odd number for a team" .)