| 单词 | knock-off time | 
| 释义 | > as lemmasknock-off time  1.   knock-off time, time to ‘knock off’ or leave off work. Also  knock-off signal,  knock-off whistle, etc. See sense  A. 2. ΘΚΠ society > occupation and work > work > times or periods of work > 			[noun]		 > stopping work > stopping time upwark15.. leaving-off time1834 quitting time1835 knocking-off1883 shutting-up time1889 knock-off time1899 thirty1929 1899    F. T. Bullen Log of Sea-waif 108  				It was ‘knock-off’ time. 1902    Daily Chron. 13 June 6/3  				After the ‘knock-off’ signal had been given. 1947    K. Tennant Lost Haven xvi. 249  				The knock-off whistle blew at the mill. < as lemmas | 
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