From Longman Dictionary of Contemporary EnglishO levelO lev‧el /ˈəʊ ˌlevəl $ ˈoʊ-/ noun [countable, uncountable] SES (Ordinary level) an examination in a range of subjects, formerly done by students in schools in England and Wales, usually at the age of 15 or 16. In 1988, O levels were replaced by GCSEs. → GCSE, A Level
Examples from the Corpus
O level• But to fail at O level might mean that a child ended with nothing at all to show for his time at school. 