1. a medication used to treat or prevent parasitic worms in animals or humans
Usage: veterinary; medical
2. a person who removes worms from animals or treats worm infestations

Examples

• The veterinarian prescribed a wormer for the puppy.
• We give our horses a wormer twice a year.
• The farmer bought wormer tablets for his sheep.
• This wormer is effective against roundworms and tapeworms.
• The pet store sells various types of wormers.
• Ask your vet which wormer is best for your cat.