AAAA

Proper noun

 * 1) Amateur Athletic Association of America
 * 2) American Association for the Advancement of Agnosticism
 * 3) American Association for Affirmative Action
 * 4) Antique Aeroplane Association of Australia
 * 5) Antique Appraisal Association of America
 * 6) Army Aviation Association of America
 * 7)  Association of Accredited Advertising Agencies
 * 8) Australian Advertising Advisory Authority
 * 9) Australian Association of Advertising Agencies
 * 10) "Authentication, Authorization, Accounting, and Auditing", the four main services provided by an Internet Authentication Service.
 * 1) Australian Advertising Advisory Authority
 * 2) Australian Association of Advertising Agencies
 * 3) "Authentication, Authorization, Accounting, and Auditing", the four main services provided by an Internet Authentication Service.
 * 1) "Authentication, Authorization, Accounting, and Auditing", the four main services provided by an Internet Authentication Service.

Noun

 * 1) A specific size and configuration of electric battery.
 * 2)  A baseball player who is too good for, but not good enough for.
 * 3) A type of DNS record used to indicate the IPv6 internet address of a DNS name.