brown hair worm

noun

: a small brownish nematode of the genus Ostertagia (family Trichostrongylidae) infesting the fourth stomach of sheep

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“Brown hair worm.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/brown%20hair%20worm. Accessed 22 Mar. 2023.

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