Stop time (6)

I believe the answer is:

period

I believe this is a double definition.

'stop' is the first definition.
('period' can be a synonym of 'stop')

'time' is the second definition.
(period is a kind of time)

(Other definitions for period that I've seen before include "Duration or interval" , "Full stop or time interval" , "term" , "School session" , "Phase" .)

I've seen this clue in The Independent.

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