aa
(noun)
noun
1. A form of lava flow associated with Hawaiian-type volcanoes, consisting of basaltic rock, usually dark-colored with a jagged and loose, clinkery surface. Compare pahoehoe.
Definition categories: substance, lava
2. an international organization that provides a support group for persons trying to overcome alcoholism
Definition categories: group
3. an associate degree in arts
Definition categories: communication, associate