the.com/blockbuster

means A movie, book, or event that's a massive commercial hit, built to draw huge crowds and bigger profits.

from Coined in WWII to describe a bomb powerful enough to level an entire city block — British and American air forces used the term for these huge aerial weapons in the early 1940s. By the late 1940s and 1950s, the word jumped to civilian life, first describing anything that hit with similar force — a smash Broadway show, a sensational piece of news — before settling into Hollywood as the label for a film so big it supposedly 'blows up' the competition.