What is "gall sickness"

Gall \Gall\ (g[add]l), n.[OE. galle, gal, AS. gealla; akin to D. gal, OS. & OHG. galla, Icel. gall, SW. galla, Dan. galde, L. fel, Gr. ?, and prob. to E. yellow. [root]49. See Yellow, and cf. Choler]

1. (Physiol.) The bitter, alkaline, viscid fluid found in the gall bladder, beneath the liver. It consists of the secretion of the liver, or bile, mixed with that of the mucous membrane of the gall bladder.

2. The gall bladder.

3. Anything extremely bitter; bitterness; rancor.

   He hath . . . compassed me with gall and travail.
   --Lam. iii. 5.

   Comedy diverted without gall.
   --Dryden.

4. Impudence; brazen assurance. [Slang]

   Gall bladder (Anat.), the membranous sac, in which the bile, or gall, is stored up, as secreted by the liver; the cholecystis. See Illust. of Digestive apparatus.

   Gall duct, a duct which conveys bile, as the cystic duct, or the hepatic duct.

   Gall sickness, a remitting bilious fever in the Netherlands.
   --Dunglison.

   Gall of the earth (Bot.), an herbaceous composite plant with variously lobed and cleft leaves, usually the Prenanthes serpentaria.