A reel is a cylindrical object around which you wrap something such as cinema film, magnetic tape, fishing line, or cotton thread.

You can talk about a reel as a way of referring to all the scenes in a film which fit onto one reel of film.

If someone reels, they move about in an unsteady way as if they are going to fall.

If you are reeling from a shock, you are feeling extremely surprised or upset because of it.

If you say that your brain or your mind is reeling, you mean that you are very confused because you have too many things to think about.

A reel is a type of fast Scottish dance, or fast country dance.