reel

In cinema, a plastic or metal spool used for winding and storing film. As the size of reels became standardized, the word came to refer to the running time of the film: a standard 35-mm reel held 313 m/900 ft of film, which runs for ten minutes when projected at 24 frames per second, so a two-reeler was a film lasting 20 minutes. Multi-reel films became popular during the 1910s and became known as feature films. Today's projectors hold longer reels of 2,000–3,000 ft.

reel

A Scottish, Irish, and Scandinavian dance, either of Celtic or Scandinavian origin. It is performed with the dancers standing face to face and the music is in quick 2/4 or 4/4, occasionally 6/8, time and divided into regular eight-bar phrases. A musical characteristic of many reels is a drop into the triad of the subdominant unprepared by modulation.