noun
scruff
SKRUHF/skrʌf/
The back of the neck, especially where it can be grasped.
The mother cat holds the kitten by the scruff.

Etymology
Provincial scuft named the nape, preserving the same bodily meaning as scruff. Its obscure ancestry probably connects it with words for the back of a horse’s neck or its withers.
In context
grabs her by the Scruff of her neck no okay so y'all I don't think you should treat women that way
More examples
- He felt cold air against the scruff of his neck.
- The coat's collar brushed the scruff.
- Loose skin covered the kitten's scruff.
Forms
scruff · scruffs