| Date: | 1700-1800 |
| Origin: | scuff 'back of the neck' (18-19 centuries), perhaps from Old Norse skoft 'hair of the head' |
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scruff

1 if you hold a person or animal by the scruff of their neck, you hold the skin, fur, or clothes at the back of their neck
by the scruff of the neck
2 [countable] British English informal someone who looks untidy or dirty
