(printing) A form of composed type or plates containing 24 leaves or 48 pages, properly arranged for printing and folding. / (printing) A book made up of sections of 24 pages.

plural of finger-four

plural of figure four

plural of train-of-four

(slang, US) a naive or clueless person.

(music) A meter or rhythm with four beats to a measure and four beats to a whole note. Specifically simple quadruple time or common time.

plural of flat back four

plural of all-run four

Alternative spelling of twenty-four

The cardinal number immediately following twenty-three and preceding twenty-five.