the GNU version of the Collaborative International Dictionary of English
n. Anything used to destroy parasites.
The Century Dictionary and Cyclopedia
n. That which destroys parasites; any agent or material means of killing parasites, as an insecticide, a vermifuge, etc.
Parasiticidal; destructive to parasites.
Word Usage
"Peru balsam is used extensively as a local protectant, rubefacient, parasiticide in certain skin diseases, antiseptic, and applied externally as an ointment, or in alcoholic solutions."