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to enter a workplace by punching a time card (I'm going to punch in a bit early today to get more work done. wiktionary.org); to record the time of one's arrival or beginning work by punching a time clock (merriam-webster.com) | |||
if you punch in a number on a machine or punch numbers into it, you push the machine's buttons or keys in order to give it a command to do something (You can bank by phone in the USA, punching in account numbers on the phone. • Punch your credit card number into the keypad. collinsdictionary.com) |