Freegan defined

I just looked up Freeganism on Wikipedia and it is not the definition I know it to be. The Wikipedia version is some sort of dumpster diver. I laughed when I read it because if someone else looked it up they must’ve thought something very wrong when I said I was a freegan. I first heard my version of “freegan” from a vegan cookbook, it’s definition was someone that tries to minimize their intake of meat and other animal by-products. It was a pretty old cookbook, maybe dumpster diving didn’t exist then?