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The larva of a warble fly that parasitizes cattle and causes a boillike swelling under the hide.
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.
the larva or adult of a warble fly, esp. Hypoderma lineatum, a common pest of cattle in North America.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.