The term "84th" typically refers to the ordinal number that comes after the 83rd and before the 85th. It can be used in various contexts, such as ranking, events, or anniversaries. For example, the 84th Academy Awards celebrated achievements in film and took place in 2012.
In a historical context, "84th" can denote a specific group or unit, such as the 84th Infantry Division in the United States Army, which served during World War II. This division was known for its significant contributions to various military campaigns during the war.