Definitions
1.nounA hot sandwich consisting of a patty of cooked ground beef or a meat substitute, in a sliced bun, sometimes also containing salad vegetables, condiments, or both.
2.nounThe patty used in such a sandwich.
3.nounGround beef, especially that intended to be made into hamburgers.
4.noun(somewhat crude) An animal or human, or the flesh thereof, that has been badly injured as a result of an accident or conflict."I'm going to make you into hamburger if you do that again."
5.nounA hamburger button.