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1.
To make more exciting or fancier, in a positive context. (see adjective jazzy)

May apply in a sexual sense, but is not limited to that use. (see jazzed up)

To jazz up her plain outfit, Jane decided to add a scarf and eye-catching jewelry.

The brochure was really boring, so she jazzed it up before getting it printed.

He was jazzed up after dancing at the club all night.
by emiloo November 18, 2006
 
2.
jazz - (n1) - trouble, the business. - (ex. giving someone the jazz)
(n2) - a pitcher's fastball

jazz (up) - (v) to rough somebody up, humiliate.
(v) I had to hit the streets, jazz (up) the local mugs for some answers.

(n1) Tony gave him the jazz. They call Tony the jazz man.

(n2) Papelbon gave him the high jazz.
by rick laprade May 06, 2007