clock in

== English == === Pronunciation === === Verb === clock in (third-person singular simple present clocks in, present participle clocking in, simple past and past participle clocked in) (US) To begin working time, especially by punching in (entering a workplace by punching a time card with the time clock). (idiomatic) To be measured at. ==== Synonyms ==== (begin working time): clock on (verb), punch in (verb) (to be measured at): tip the scales at ==== Antonyms ==== (antonym(s) of “begin working time”): clock out (verb), clock off (verb), knock off (verb), punch out (verb) ==== Translations ==== === See also === clock on on the clock, off the clock punch in, punch out