noun
A war between citizens of the same country. Often used in historical or political contexts. Compare with 内乱 (internal rebellion) and 内戦 (civil war, more common term).
See also: 内乱
その国は長い市民戦争で荒廃した。
The country was devastated by a long civil war.
市民戦争の犠牲者は数十万人に上った。
The casualties of the civil war reached hundreds of thousands.