Definition: Lamb: Meat (or meat, in a legal sense) that has been slaughtered. Definition: The process of slaughtering an animal for human consumption. This involves breaking apart its body to remove all but the internal organs or meat, typically washing and then drying them before using them. In Greek mythology, a lamb was slain by Hades as punishment for his sin of killing youth. This metaphorical act is often used in literature and plays to convey moral condemnation.