O level

1.普通证书考试（过去英格兰、威尔士对某科目的考试，低于高级证书考试，通常在 16 岁时参加。1988 年被普通中等教育证书 (GCSE) 取代）(in England and Wales in the past) an exam in a particular subject, at a lower level than A level , usually taken at the age of 16. In 1988 it was replaced by the GCSE .

1.a former school examination primarily for fifth-year students at secondary schools in England and Wales, now replaced by the General Certificate of Secondary Education .

2.a subject studied, an examination taken, or a pass obtained at O level

3.an examination taken in the past by students aged 15 or 16 in England, Wales, and Northern Ireland. Since 1988 students have taken examinations called GCSEs.