Does anyone know what the black dahlia is?, and no it's not a plant but Idk what it means

Google is a wonderful thing, te know...
link

But in all due respect, I had taken part in a 1940s project last anno and I was the one in charge of the famous births, deaths, and murders. It was awesome. =w=
I know a lot about the Black Dahlia murder because of the project

I'm pretty sure there was a movie awhile back da the same title. Something about a young woman who's mouth was slit. Her name was Elizabeth Short. She got the nickname(The Black Dahlia) from the newspaper who printed her story. (Apparently they liked nicknaming cases they found particularly colorful.)

I don't have all the answers, but here's where te can read più about it: link

in the image pictures in Google lol it has a movie a band and in wikipidia it a newspaper o something

Well I believe it was the nickname of an actress, Elizabeth Short, who was brutally murdered in the forties.