From The Collaborative International Dictionary of English v.0.48 :
AA \AA\ n. 1. acronym for Associate in Arts, a college degree granted for successful completion of a two-year course of study in arts or general topics. Syn: Associate in Arts [WordNet 1.5] 2. Alcoholics Anonymous. [Acronym.] [WordNet 1.5]From WordNet (r) 3.0 (2006) :
aa n 1: a dry form of lava resembling clinkers 2: an international organization that provides a support group for persons trying to overcome alcoholism [syn: Alcoholics Anonymous, AA] 3: an associate degree in arts [syn: Associate in Arts, AA]From V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016) :
AA Auto Answer (MODEM)