Grand Slam

Proper Noun

• winning in each of the three UEFA cups - UEFA Champions League, UEFA Europa League and Cup Winners' Cup (defunct).
• The four biggest competitions of the year: Wimbledon, the French Open, Australian Open and the US Open
• Victory in every game in the Six Nations competition between England, Wales, Scotland, Ireland, France and Italy
• Victory by a Southern Hemisphere national team over all of the Home Nations—England, Wales, Scotland, and Ireland—in a single tour
• The four (or five) biggest competitions of the year; see Grand Slam (golf) on Wikipedia.
• A ten-tonne earthquake bomb used by the Royal Air Force in World War II; see Grand Slam (bomb) on Wikipedia.