limberneck

[lim-ber-nek]
noun Veterinary Pathology.
  1. a fatal infection of botulism affecting birds, especially chickens and ducks, characterized by weakness of the neck muscles and inability to eat.

Origin of limberneck

First recorded in 1905–10; limber1 + neck
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018