1) Back end 2) Backside 3) Nape 4) Nape of the neck 5) Rear 6) Scruff 7) The back side of the neck 1) Nape 2) Scruff 
the nape of the neck
• (n.) The back or upper part of the neck; the nape. • (n.) The back or upper part of the neck; the nape.
(noo´kә) nape. adj., nu´chal., adj.
Nu'cha noun ; plural Nuch... . [ Late Latin ] (Zoology) The back or upper part of the neck; the nape. 
Type: Term Pronunciation: nū′kă Definitions: 1. The back of the neck. Synonyms: nape
nucha 1. The nape (back) of the neck. 2. The back or upper part of the neck.
nucha, nape of neck.
French nuque = nape or back of the neck; adjective - nuchal.