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stomach worm

noun
  1. a nematode, Haemonchus contortus, parasitic in the stomach of sheep, cattle, and related animals.
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Origin of stomach worm

First recorded in 1640–50
Also called twisted stomach worm, wireworm.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for stomach worm

stomach worm

noun
  1. any of various nematode worms that are parasitic in the stomach of mammals, esp Haemonchus contortus, which infests sheep: family Trichostrongylidae
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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