(n) :
(countable, uncountable) A disease of waterfowl in which the last joint of the wing becomes twisted, causing the wing feathers to point laterally outwards; a wing of this kind.
(n) :
(countable, uncountable) A disease of waterfowl in which the last joint of the wing becomes twisted, causing the wing feathers to point laterally outwards; a wing of this kind.