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English definition of “nine”

nine

number uk   /naɪn/ us  
A1 the number 9: The children go to bed at nine (o'clock). a nine-month prison sentenceCardinal numbers, including nought and zero nine to five describing or relating to work that begins at nine o'clock in the morning and finishes at five, the hours worked in many offices from Monday to Friday: a nine-to-five routine She's tired of working nine to five.Days and times of dayWorking hours and periods of workWork, working and the workplace
(Definition of nine from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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