An archaic or dialectal word meaning to gather; to collect or assemble together.
From Old English 'gaderian' or dialectal 'gather,' with 'gr-' being a variant pronunciation. This word represents an older form of the modern 'gather.'
The word 'grather' is a great example of how regional accents and older speech patterns survive in written records—different parts of medieval England pronounced and spelled 'gather' differently, and some of those variants made it into literature.
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