Definition of galls:
(n) :
(uncountable) Impudence or brazenness; temerity; chutzpah.
(n) :
(figurative, uncountable) A feeling of exasperation.
(n) :
(figurative, uncountable) Great misery or physical suffering, likened to the bitterest-tasting of substances.
(v) :
(transitive, figurative) To exasperate.
(v) :
(transitive, figurative) To bother or trouble.
(v) :
(transitive, figurative) To harass, to harry, often with the intent to cause injury.