Student or Learner
The closing ceremonies for the Summer Games included the same dramatic flare at the opening ceremonies, with an army of dancers, acrobats and drummers and the parade of the athletes filling the field, but also included a show within the show by London, host of the 2012 Games. There was a red double-decker bus. Performance of " Whole Lotta Love "by Led Zeppelin guitarist Jimmy Page, and a soccer boot by David Beckham. Capping the festivities, another massive display of fireworks which rocked the city and as Summer Olympic attention now turns to London, the English city held a party of its own on Sunday. Hundreds gathered in front of Buckingham Palace to wave 2012 flags.
What's the meaning of Capping here? I looked up in the dictionary and find one of the Cap's explanations that "to say or do sth that is funnier, more impressive,than sth that has been said or done before" , but I'm doubtful.
cap, crest = lie at the top of
To cap something: to top it, put a cap on it.