ant bearn.1. The giant anteater.2. The aardvark.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.aard?vark (??rd?v?rk) n. a large burrowing African mammal, Orycteropus afer, having a piglike snout and long sticky tongue for feeding on ants and termites. [1825?35;