brazen and insolent audacity; impudencearchaic bilesomething bitter to endurerancour or bitterness [Old English gealla bile]
a cause or state of exasperationa skin sore caused by rubbing [Old English gealla and early Low German galle sore]
to cause feelings of mortification and irritation in (somebody); to vex acutely a great mind like his, cramped and galled by narrow circumstances — James Boswellto wear (something) away by rubbing
a diseased swelling of plant tissue produced by infection with fungi, insect parasites, etc [Middle English via French galle from Latin galla]