A heist is when someone or a group steals valuable things, often in an exciting and clever way. It's like something out of a movie.
When people talk about a heist, they usually mean a big-time robbery that's planned carefully and often involves sneaking into a secure place to get what's being stolen. This could be a bank, a museum, or even a high-security jewelry store. Sometimes the thieves are clever and manage to get away with millions of dollars' worth of loot. Other times they're caught by the police before they can make their getaway.
A robbery or burglary, especially from an institution such as a bank or museum.
To steal, rob or hold up (something).
