A restaurant menu contains hamburgers, hotdogs, meatballs. A UI menu is represented by abstract icons of the items contained within a restaurant menu.

Now I am starting to like the hamburger menu after all… perhaps more as satire though. :)

For what it’s worth, ellipsis is the best of the bunch, because it means the same thing as in the written language, and is concise enough to use as a button that suggests what the action does.