In Scottish dialect, a loud resonant sound or the act of making such a sound; also an archaic term for vibration or trembling.
From Middle English and Scottish 'dorren' or 'dor,' possibly imitative in origin, resembling similar words for vibration and sound across Germanic languages.
Onomatopoeia—words that sound like what they mean—are the most ancient type of vocabulary, and 'dorr' is a perfect example of how humans have always tried to capture sound itself in language.
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