1. One of the longest running Broadway musicals of all time. Filled with cheesy, nonsense plots and music...but you love it anyway.
2. A movie starring Olivia Newton John and John Travolta. Based on the play, with a thicker plot and added songs such as "Grease is the Word", "Hopelessly Devoted to You", and "You're the One That I Want".
3. Fatty or oily matter; lubricant.
That girl played Jan in Grease! Her hair looks pretty greasey...
A pointless reality show in which "celebrities" (aka washed up musicians, actors, and athletes who people may or may not have ever heard of before) sadly attempt to dance their way to fame and fortune.
Why do millions of people watch Dancing With the Stars? It is pathetic!