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English definition of “junior”

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junior

noun
 
 
/ˈdʒuːniər/
be 10/20, etc years sb's junior to be 10, 20, etc years younger than someone: My wife is 8 years my junior.Describing age and birthdays
STUDENT [C] US a student in their third year of study at an American college or high school (= school for students aged 15 to 18) Students and pupils
CHILD [C] UK a child who goes to a junior schoolStudents and pupils
(Definition of junior noun from the Cambridge Learners Dictionary © Cambridge University Press)
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