It's when someone in your family is being violent at home.
The adults may be hurting each other, or one of them may be hurting you.
Violence can come in many forms and might include some of the following:
Physical
Pushing
Slapping
Kicking
Spitting
Pulling hair
Punching
Choking
Emotional or mental:
Constant criticism
Threatening to hurt a partner or their friends, family or pets
Preventing someone from seeing friends
Taking money and not paying back
Controlling other parts of partner's life - where they go, who they see, what they wear