means The name given to a book, film, song, or other work — or a word marking someone's rank, office, or claim to something.

from From Latin titulus, a label or inscription — the placard nailed above a doorway, the heading scratched at the top of a page, the tag stating what a thing was or who owned it. It slipped into Old French as title and on into English, carrying that double life: the name on the spine and the rank on the man. The legal sense — your 'title' to land or property — keeps the oldest flavor of all: a written claim, the inscription that says this is mine.