SCRUFF
nape, scruff, nucha
(noun) the back side of the neck
Source: WordNet® 3.1
Etymology 1
Noun
scruff (countable and uncountable, plural scruffs)
Someone with an untidy appearance.
Stubble, facial hair (on males).
(obsolete) Crust.
(obsolete) Scurf.
Etymology 2
Noun
scruff (plural scruffs)
The loose skin at the back of the neck of some animals.
(rare) The back of the neck, nape; also scruff of the neck.
Usage notes
Strictly refers to the loose skin at the back of the neck – found on many mammals, though not humans – rather than the back of the neck itself. While this distinction is not always observed, scruff is used almost exclusively in the phrase “to grab [someone/something] by the scruff [of the neck]”.
Synonyms
• nape
• nucha, nuchal (medical)
• withers (of a horse)
Verb
scruff (third-person singular simple present scruffs, present participle scruffing, simple past and past participle scruffed)
To lift or carry by the scruff.
Source: Wiktionary
Scruff, n. Etym: [See Scurf.]
Definition: Scurf. [Obs.]
Scruff, n. Etym: [Cf. Scuff.]
Definition: The nape of the neck; the loose outside skin, as of the back of
the neck.
Source: Webster’s Unabridged Dictionary 1913 Edition