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anthill

[ant-hil]
noun
  1. a mound of earth, leaves, etc., formed by a colony of ants in digging or constructing their underground nest.
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Origin of anthill

1250–1300; Middle English amete hulle, ampte hille; see ant, hill
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for ant hill

ant hill

noun
  1. a mound of soil, leaves, etc, near the entrance of an ants' nest, carried and deposited there by the ants while constructing the nest
  2. a mound of earth, usually about 2 metres high, built up by termites in forming a nest
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for ant hill

anthill

n.

late 13c., from ant + hill.

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Online Etymology Dictionary, © 2010 Douglas Harper