Lissanya; yes, you had a very abusive childhood. There might have been good times (hell, even great times) but that doesn't remove the fact that you were abused in many ways, and all of it is serious. Don't believe your mother when she says that you don't know what abuse is. Go to any website about childhood abuse and you will see yourself in a lot of it, I'm sure.

So your brother believes that it was abuse, and that he helped inflict it on you? What does he feel about his own childhood?

Have you read about Narcissitic parents? I'm not saying that your parents are as I don't know enough about them... but it certainly sounds like your brother had the role of "Golden Child" which is a common term used in literature about narcissism... and you were the "Scapegoat" which is another common term used.

I am so sorry that you are doubting yourself and your memories. I'm so sorry that they're actively trying to make you think that all of this is your fault. It isn't your fault. They should have never treated you the way that they did. You didn't do anything wrong, and you didn't do anything to deserve it.