Wa, this question came out alot of times in clubsnap already.
If I'm not wrong, bokeh is a well focused subject, but a blur background blended in. And I also heard that prime lens give better bokeh than zoom lens. Correct me if I'm wrong. The word came from some japanese word meaning out of focus areas for the lens and is closely related to the circle of confusion.
Yeah.. bokeh means intentional blurring of background while the subject remains well in focus. Usually achieved using long lens and/or large aperture.
Makes the subject look really good.. coz the main focus of the eye will be on the subject.