An excrescence of any form produced on any part of a plant by insects or their larvae. They are most commonly caused by small Hymenoptera and Diptera which puncture the bark and lay their eggs in the wounds. The larvae live within the galls. Some galls are due to aphids, mites, etc. See Gallnut.

An abnormal growth of tissue formed in response by the tree to an attack by certain insects, fungi, bacteria etc

an abnormal swelling of plant tissue caused by insects, microorganisms, or external injury

an abnormal outgrowth caused by infection or irritation by certain fungi or bacteria

To fret and wear away by friction; to hurt or break the skin of by rubbing; to chafe; to injure the surface of by attrition; as, a saddle galls the back of a horse; to gall a mast or a cable.

To fret; to vex; as, to be galled by sarcasm.

A wound in the skin made by rubbing.

an open sore on the back of a horse caused by ill-fitting or badly adjusted saddle

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.

Anything extremely bitter; bitterness; rancor.

a feeling of deep and bitter anger and ill-will

a digestive juice secreted by the liver and stored in the gallbladder; aids in the digestion of fats