The action or an act of inflicting pain, frequently as part of religious discipline; spec. self-mortification; an instance of this. In later use…

The action of mortify, v.; an instance of this, mortification.

In religious use: the action of mortifying the body, its appetites, etc.; the subjection or bringing… With of, as in mortification of (the) body (…

In religious use: the action of mortifying the body, its appetites, etc.; the subjection or bringing… Without of.

the subjugation of one's appetites or desires by self-denial or self-discipline, or by the infliction of physical pain on oneself, esp. as an aspect…

Theology. Self-mortification. Obsolete. rare.

figurative. The action of ‘crucifying’ or mortifying (passions, sins, etc.).

The principles or practice of the Ascetics; rigorous self-discipline, severe abstinence, austerity.