Main Entry:

block·bust·er

Pronunciation:

\ˈbläk-ˌbəs-tər\

Function:

noun

Usage:

often attributive

Date:

1942

1 : a very large high-explosive bomb 2 : one that is notably expensive, effective, successful, large, or extravagant <a blockbuster movie> 3 : one who engages in blockbusting