- to raise the hackles of
|part of speech:
||one of the long, thin feathers on the neck or lower back of certain birds, such as the rooster.
||(pl.) the hairs on the back of the neck of certain animals, such as the dog, that become erect under provocation, as in anger.
||neck or saddle feathers of a rooster or similar bird, used on artificial flies in fishing.
||to raise the hackles of