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British Dictionary definitions for clock on

clock on

clock in

verb
  1. (intr, adverb) to arrive at work, esp when it involves registering the time of arrival on a card
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012