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Tweet abbr. 1. Bible Acts of the Apostles 2. Alcoholics Anonymous 3. antiaircraft 4. Associate in Arts |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
n. Lava having a rough surface. [Hawaiian 'a'ā, to burn, aa.]  (click for a larger image) aalava flow near Hawaii Volcanoes National Park |
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
