What does "self-defence" mean?

Alternative spelling of self-defense.

What is a synonym for "self-defence"?

Common synonyms include: self-defense, self-protection.

noun

noun ·3 syllables ·Rare ·Advanced level

Noun

1
Alternative spelling of self-defense. alt-of, alternative, uncountable, usually
2
the act of defending yourself wordnet

"Tom killed John in self-defence."

From self- + defence.