The Islamic act of washing parts of the body using water for ritual prayers and for handling and reading the Qur'an.
A purification or cleansing, especially emotional.
A release of emotional tension after an overwhelming vicarious experience, resulting in the purging or purification of the emotions, as through watching a dramatic production (especially a tragedy).
A therapeutic technique to relieve tension by re-establishing the association of an emotion with the memory or idea of the event that first caused it, and then eliminating it by complete expression (called the abreaction).
Purging of the digestive system.
Any release of emotional tension to the same effect, more widely.