wormer

noun
worm·​er | \ˈwər-mər \

Definition of wormer 

: a drug used in veterinary medicine to worm an animal

First Known Use of wormer

circa 1934, in the meaning defined above

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The first known use of wormer was circa 1934

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wormer

noun
worm·​er | \ˈwər-mər \

Medical Definition of wormer 

: an agent used in veterinary medicine to destroy or expel parasitic worms

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