clock-in
verbUK /ˈklɒk ɪn/
US /ˈklɑːk ɪn/
To clock in means to record the time you start work.
Don't forget to clock in when you arrive at the office.
RELATED WORDS
OTHER MEANINGS
2. To register one's arrival at a workplace using a time clock or electronic system.
She clocked in at nine o'clock sharp.
3. To begin a period of work or duty.
The night nurse clocked in just as the day shift left.
4. To record the start time of an activity or event.
The runners clocked in at the starting line before dawn.