An archaic or variant spelling of 'gait,' the manner or style of walking.
This is an older spelling variant of 'gait,' reflecting earlier orthographic conventions before English spelling became standardized in the modern period. The double 't' was sometimes used in Middle English.
Old spelling variations like 'gaitt' show that English spelling wasn't standardized until the printing press made consistency important—before that, writers spelled words however they thought looked right.
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