Define a "common pocketknife"?

So I recently asked a question about the purchase of knives / knives automatic. One response gave me a useful link. I live in Florida and I love weapons, I am trying to start a collection. So I read some of the laws of Florida and says that can only lead to a "common pocketknife." So what the hell is that? I know a "knife" is a sheet of more than 3 "and I read that in other states can not have knives that lock (for those not fond knife is a knife that flips open and snaps into position through a metal clip) So I'm assuming a common knife is a knife under 3 "which is bent, does not open by pressing a button of any kind and not lock into place? If that is not correct then please help me! I do not want to be doing anything illegal. Thanks in advance

Benchmade model 42 is illegal in the state of Virginia?

Knives alloud butterfly but 42 has a latch for idk if thats considered automatic in the knife act

The insurance is not considered automatic spring. The insurance has closed the knife, but if you squeeze the handles, the closure will pop Clear, essentially allowing the knife to flip open. The opening of the knife is made entirely by the user, not the spring. This video is Cutlerylover. He starts talking about the latch around 2:00. This will help you understand what I mean.

Benchmade 42A Butterfly Knife