hackles

剑桥词典

the hairs on the back of some animals , or the feathers on the back of the neck of some birds , that rise when the animal or bird is frightened or about to fight
（某些动物、鸟受惊吓或临战时会竖起的）颈背部毛，颈羽

习语

make (sb's) hackles rise 返回 hackles