AA
Multiple Entries:AA aa
Concise Oxford English Dictionary © 2008 Oxford University Press:
AA/eɪˈeɪ/
▶abbreviation
- 1 Alcoholics Anonymous.
- 2 anti-aircraft.
- 3 Automobile Association.
Concise Oxford English Dictionary © 2008 Oxford University Press:
aa /ˈɑːɑː/
▶noun Geology basaltic lava forming very rough, jagged masses with a light frothy texture. Often contrasted with pahoehoe.
– origin C19: from Hawaiian 'a-'a.
'AA' also found in these Oxford entries:

