Meaning

noun a timepiece that shows the time of day

verb measure the time or duration of an event or action or the person who performs an action in a certain period of time

originFirst use appears c. 1370. From Middle English clokke, clok, cloke (“clock”), from Middle Dutch clocke (“bell, clock”), from Old Dutch *klokka, from Medieval Latin clocca (“bell, clock, cloak”), probably of Celtic origin, from Proto-Celtic *klokkos (“bell”) (compare Welsh cloch (“bell”), Old Irish cloc (“bell, clock”)), either onomatopoeic or from Proto-Indo-European *klek- (“to laugh, cackle”)…

Etymology from Wiktionary, CC BY-SA 3.0