blockbuster
n. countable B2 Upper Intermediate US //ˈbɫɑkˌbəstɝ// UK //blˈɒkbʌstɐ// block·buster
n. a movie, book, or product that is extremely popular and makes a lot of money.
n. a commercial work, especially a film, that achieves massive public success and high financial returns.
The new superhero movie is a huge blockbuster.
The studio spent millions on marketing to ensure the film became a summer blockbuster.
While critics dismissed the plot as formulaic, the film's visual spectacle secured its status as a global blockbuster.
From block + buster, referring originally to aerial bombs capable of destroying a whole block of buildings.