olemus
ISO 22300:
enda või oma omandi kaitse kahjustuse eest, mida püüab tekitada keegi teine
= protection of one’s person or property against some injury attempted by another

Wiktionary, noun:
1. the means of defending oneself from physical attack
2. (law) the right to protect oneself against violence by using reasonable force, which can be used as justification in several charges including murder, assault, and battery

ülevaateid
https://en.wikipedia.org/wiki/Self-defense

https://kravmagasystems.com.au/13-basic-self-defence-skills-everyone-should-develop/

https://en.wikipedia.org/wiki/Right_of_self-defense