Tonsure

Tonsure is the traditional practice of Christian churches of cutting or shaving the hair from the scalp (while leaving some parts uncut) of clerics, monastics, and, in the Eastern Orthodox Church, all baptized members. Tonsure, usually qualified by the name of the religion concerned, is now sometimes used more generally for such cutting or shaving for monks, devotees, or mystics of other religions as a symbol of their renunciation of worldly fashion and esteem, e.g., by Buddhist novices and monks, and some Hindu streams.

Read more about Tonsure:  Buddhism, Hinduism, Islam