nape

This term specifies a precise anatomical location, referring exclusively to the posterior part of the neck. It carries a more clinical or descriptive tone than simply saying the back of the neck, often appearing in literature to evoke a sense of vulnerability or intimacy, as it is a sensitive area frequently associated with sudden chills or gentle touches.

Because it refers to a specific, singular body part, it is treated as a standard countable noun. While most people have only one nape, the plural form is grammatically possible when referring to multiple individuals in a collective or medical context.