1informal An event or gathering dedicated to sharing information about computer programming and software development.
- ‘an annual computer hackfest in Vancouver’
2informal A period of frenzied violence, particularly in a film, book, or video game.
- ‘a gruesome hackfest’
- 2.1A sporting event involving rough play or an excessive number of fouls.
- ‘you just know before the game starts that it's going to be a hackfest’
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