gall

1. Bile, especially that of an animal; the greenish, profoundly bitter-tasting fluid found in bile ducts and gall bladders, structures associated with the liver.
2. The gall bladder.
3. Great misery or physical suffering, likened to the bitterest-tasting of substances.
4. A feeling of exasperation.
5. Impudence or brazenness; temerity, chutzpah.
6. A sore or open wound caused by chafing, which may become infected, as with a blister.
7. A sore on a horse caused by an ill-fitted or ill-adjusted saddle; a saddle sore.
8. A pit on a surface being cut caused by the friction between the two surfaces exceeding the bond of the material at a point.

1. To bother or trouble.
2. To harass, to harry, often with the intent to cause injury.
3. To chafe, to rub or subject to friction; to create a sore on the skin.
4. To exasperate.
5. To cause pitting on a surface being cut from the friction between the two surfaces exceeding the bond of the material at a point.

   Improper cooling and a dull milling blade on titanium can gall the surface.

6. To scoff; to jeer.

1. A blister or tumor-like growth found on the surface of plants, caused by burrowing of insect larvae into the living tissues, especially that of the common oak gall wasp Cynips quercusfolii.
2. A bump-like imperfection resembling a gall.

verb

To impregnate with a decoction of gallnuts in dyeing.