noun, noun or participle which takes 'suru', intransitive verb
A playful battle where participants throw snowballs at each other. Often used with する to describe the activity.
子供たちが公園で雪合戦をした。
The children had a snowball fight in the park.
雪がたくさん降ったので、明日
Since a lot of snow fell, we can have a snowball fight tomorrow.