:hairs along the neck and back of an animal(动物后颈和背部的)毛发 — often used figuratively with raise or rise to describe something that makes people angry or annoyed常与raise或rise连用用作比喻,形容令人生气或烦恼的事物
The court ruling is sure to raise some hackles. [=sure to upset some people]法庭的判决肯定会引起一些人的不满。
Their arrogant attitude is what really made my hackles rise. [=really made me angry]真正让我生气的是他们那傲慢的态度。