Douglas Harper's Etymology Dictionary
WordNet
hair-shirt
adj. self-sacrificing or austere [syn: hair-shirted]
Usage examples of "hair-shirt".
Carmelite or Trappist sister, who macerates herself by the hair-shirt or the cilex, would look upon God as a false or wicked Being, if, after such cruel torment, He did not promptly open to her the gates of Paradise.