fowl pox

noun Veterinary Pathology.
  1. a virus disease of chickens and other birds characterized by warty excrescences on the comb and wattles, and often by diphtherialike changes in the mucous membranes of the head.

Origin of fowl pox

First recorded in 1905–10
Also called avian diphtheria, avian pox.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018