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English definition of “junior”

junior

noun (YOUNGER)    /ˈdʒuː.ni.ər/ US  /-njɚ/
[C] a young person below a particular age who is involved in an activity, especially sport: Saturday morning sessions are for juniors only.Competitors and participants in sports and gamesYoung people three, eight, etc. years sb's junior C2 three, eight, etc. years younger than someone: My brother is five years my junior. My sister is my junior by three years (= three years younger than me). → Compare senior adjectiveDescribing age and birthdays
(Definition of junior noun (YOUNGER) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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