venomer

noun

1. (dated, rare)One who or that which poisons.

   “And yet it would have been an excellent thing in the good old toxicological days of Italy; and people of noble family would have found a sensitive goblet of this sort as sovereign against the arts of venomers as an exclusive diet of boiled eggs.”

   “Attention has been previously directed to the vast representation of venomous animals in the world fauna. Of this group, certain taxa are of most concern as venomers in the United States.”