A
bit part is a role in which there is direct interaction with the principal actors and no more than five lines of dialogue (often referred to as a "five or less" in the United States). In
British television, bit parts are referred to as
under sixes. An actor who regularly performs in bit roles, either as a
hobby or to earn a living, is referred to as a
bit player, a term also used to describe an aspiring actor who has not yet broken into major supporting or leading roles.