self-defense

[self-di-fens, self-]

noun

the act of defending one's person when physically attacked, as by countering blows or overcoming an assailant: the art of self-defense.
a claim or plea that the use of force or injuring or killing another was necessary in defending one's own person from physical attack: He shot the man who was trying to stab him and pleaded self-defense at the murder trial.
an act or instance of defending or protecting one's own interests, property, ideas, etc., as by argument or strategy.

Also especially British, self-de·fence.

Origin of self-defense

First recorded in 1645–55

Related formsself-de·fen·sive, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for self-defence

Historical Examples of self-defence

I am never successful in my little attempts at deception, even in self-defence.
The Fortune Hunter
Louis Joseph Vance
Good customs are universal and varied, like native chivalry and self-defence.
Alarms and Discursions
G. K. Chesterton
In what other manner could we ever study the art of self-defence?
Laws
Plato
This may have been because of a desire to please me, or in self-defence; I am inclined to think the latter.
Kent Knowles: Quahaug
Joseph C. Lincoln
But if it was done in self-defence it was no crime, and you must not and shall not suffer.
The Eternal City
Hall Caine

British Dictionary definitions for self-defence

self-defence

noun

the act of defending oneself, one's actions, ideas, etc
boxing as a means of defending the person (esp in the phrase noble art of self-defence)
law the right to defend one's person, family, or property against attack or threat of attack by the use of no more force than is reasonable

Derived Formsself-defensive, adjective

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for self-defence

self-defense

1650s, "act of defending oneself," first attested in Hobbes, from self- + defense. In sports sense, first with reference to fencing (1728), then boxing (1820s).