What member of the original Star Trek series has a cameo in the new movie?
Leonard Nimoy .
It refers to a cameo appearance. Acoording to wikipedia: A cameo role or cameo appearance (often shortened to just cameo) is a brief appearance of a known person in a work of the performing arts, such as plays, films, video games and television. These roles are generally small, many of them non-speaking ones, and are commonly either appearances in a work in which they hold some special significance (such as actors from an original movie…
That's when someone well known or has contributed to the movie is briefly shown. The cameo doesn't have a large role to the plot, and is just used as a recognition devise. For example, at the end of the movie The Pursuit of Happiness, the guy that the movie is based on briefly passes by the scene. That would be a cameo role.
George Lucas. George Lucas did not create, write or come up with the Star Wars series by himself. He was merely a director to the movie. Oliver Simon wrote the original series books. George Lucas then bought the rights to the storyline and characters, re-wrote the series, and made them into a movie.