a public examination taken for the General Certificate of Education, with a smaller course content than an A level: since 2000 taken either as the first part of a full A level or as a qualification in its own right
b.
the course leading to this examination
c.
(as modifier)
AS-level English
2.
a pass in a subject at AS level
I've got three AS levels
AS-level in British English
(ˌeɪˈɛsˌlɛvəl)
modifier
education, British
of or relating to a public examination taken for the General Certificate of Education,with a smaller course content than an A level