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English definition of “clock in”

clock in

( UK also clock on, US also punch in) phrasal verb with clock
 
 
/klɒk/ verb [I]
WORKPLACE to begin work, especially by recording the time you arrive at work on a special machine: What time did you clock in this morning? We are supposed to clock in before 9.00 a.m.
(Definition of clock in from the Cambridge Business English Dictionary © Cambridge University Press)
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