wormer

worm +‎ -er

wormer (countable and uncountable, plural wormers)

1. Dewormer, medicine used in deworming an animal.
2. Vermicide, any substance used to kill worms.
   • 2020 February 25, Christopher de Bellaigue, “The end of farming?”, in The Guardian‎:

     Dung beetles dived into delicious organic cowpats left by longhorn cattle that hadn’t been fed wormers and parasiticides

   • 2007 February 5, Rick Moranis, “12 Rms, 8 Bths, 38 Wind Turbines”, in New York Times‎:

     If demand for the herbs is high we can add more wormers to the lobby and basement.

• Merrow, Mowrer, merrow