Cilice

A cilice /ˈsɪlᵻs/ was originally a garment or undergarment made of coarse cloth or animal hair (a hairshirt) worn close to the skin. It was used in some religious traditions to induce discomfort or pain as a sign of repentance and atonement.

Cilices were originally made from sackcloth or coarse animal hair so they would irritate the skin. Other features were added to make cilices more uncomfortable, such as thin wires or twigs.

In modern religious circles, it simply means any device worn for the same purposes.

Etymology

The word derives from the Latin cilicium, a covering made of goat's hair from Cilicia, a Roman province in south-east Asia Minor. The reputed first Scriptural use of this exact term is in the original Latin Vulgate of Psalm 35:13, "Ego autem, cum mihi molesti essent, induebar cilicio." This is translated as hair-cloth in the Douay Bible, and as sackcloth in the King James Version and the Book of Common Prayer ("But as for me, when they were sick, my clothing was sackcloth." in the King James Bible). Sackcloth is often mentioned in the Bible as a symbol of mourning and penance, and probably was a form of hairshirt. Sackcloth may also mean burlap. However, sackcloth in the Bible was usually made of coarse, black goat's hair.