freestyle

noun

1. sportsA sports event where competitors can choose their own method of participation.

2. swimmingA swimming event in which the contestants may choose any stroke.

3. swimmingThe swimming stroke commonly referred to as the front crawl or the Australian crawl.

4. skiingA cross-country skiing event in which the competitors may choose any style of skiing.

5. skiingThe skiing style commonly referred to as skating.

6. wrestlingA style of wrestling in which any non-injurious holds are permitted.

7. musicA form of rapping in which the emcee makes up lyrics while performing.

8. attributiveAnything done in an improvised or unrestricted way.

9. A race (as in swimming) in which each contestant has a free choice of the style to use

Ellipsis of Latin freestyle, a form of electronic dance music.

verb

1. especially in rap musicTo improvise one's own style; to ad-lib.

2. To improvise one's dance moves; dance freely.