The term 'back of neck' is used to describe the area at the back of the head and neck. The crossword solutions for this term are SCRUFF (6 letters), NAPE (4 letters), NAPES (5 letters), and NUCHA (5 letters). SCRUFF is a term used to describe the lower part of the back of the neck, while NAPE is an alternative term for the same area. NAPES is a plural form of NAPE, and NUCHA is a term used to describe the upper part of the back of the neck.