[ˈɑːˌɑː], (Noun)

Definitions:
- basaltic lava forming very rough, jagged masses with a light frothy texture


Phrases:

Origin:
mid 19th century: from Hawaiian 'a-'a

[eɪˈeɪ], (Abbreviation)

Definitions:
- Alcoholics Anonymous

- anti-aircraft

- (in the UK and South Africa) Automobile Association


Phrases:

Origin: