1. A method of identification of bodies in a morgue. A label on string tied to a deceased persons toe with their name and other information on it. Anklebands (like the wristbands you get when you visit a hospital) are now more common.
2. (Slang) To kill somebody.
1. "Who is the guy in drawer 17 Tim? I didn't see him admitted?"
"Erm, let me check his toe tag."
2. Man, I'm gonna toe tag that asshole, gimme my gun!