Definitions
1.NounA person, especially one of a group, who rings bells.
2.NounA door-to-door salesman.
3.NounAn assignment, done regularly at the beginning of a class, and intended as a warm-up before other classroom activities.
4.NounA type of anatomy exam in which students must answer questions at a series of stations and move on to the next station when a bell is rung.