hackles
noun [ plural ] uk/ˈhæk.əlz/ us/ˈhæk.əlz/
（某些动物、鸟受惊吓或临战时会竖起的）颈背部毛，颈羽
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
Idiom
make (someone's) hackles riseidiom (also raise (someone's) hackles) 激怒（某人）
to annoy someone
The president's speech has raised hackles among members of the opposing party. 总统的演说激怒了反对派。