noun
hair on the back of one's head
Refers specifically to the hair at the back of the head. Most often encountered in the idiomatic expression 後ろ髪を引かれる (to feel reluctant to leave; literally 'to have one's back hair pulled').
See also: 後ろ髪を引かれる
彼女は後ろ髪を引かれる思いで故郷を離れた。
She left her hometown with a heavy heart, as if being pulled back by the hair.
後ろ髪を引かれるような気持ちで、パーティーを後にした。
I left the party feeling reluctant, as if my back hair were being pulled.