Pars pro toto
Pars pro toto (Latin for 'a part (taken) for the whole'; ; Latin: [ˈpars proː ˈtoːtoː]) is a figure of speech where the name of a portion of an object, place, or concept is used or taken to represent its entirety. It is distinct from a merism, which is a reference to a whole by an enumeration of parts; and metonymy, where an object, place, or concept is called by something or some place associated with it.