junior² n [C] 1AmE a student in the third year of HIGH SCHOOL or college 【美】 〔高中或大学的〕三年级学生 2BrE a child who goes to a junior school 【英】 小学生 3 be 10 years/6 months etc sb's junior to be ten years, six months etc younger than someone 比某人小十岁/六个月等: He married a woman ten years his junior. 他娶了个比他小十岁的女子。 → compare 比较 SENIOR²