Meaning

• Bile, especially that of an animal; the greenish, profoundly bitter-tasting fluid found in bile ducts and gall bladders, structures associated with the liver.

• The gall bladder.

• Great misery or physical suffering, likened to the bitterest-tasting of substances.

• A feeling of exasperation.

• Impudence or brazenness; temerity, chutzpah.

• A sore or open wound caused by chafing, which may become infected, as with a blister.

• A sore on a horse caused by an ill-fitted or ill-adjusted saddle; a saddle sore.

• A pit on a surface being cut caused by the friction between the two surfaces exceeding the bond of the material at a point.

Meaning

• To bother or trouble.

• To harass, to harry, often with the intent to cause injury.

• To chafe, to rub or subject to friction; to create a sore on the skin.

• To exasperate.

• 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."

• To scoff; to jeer.