The term "getaway" has several meanings, depending on its context.
1) In a criminal context, it refers to an escape from law enforcement or prison by someone who has committed a crime. For example, "He made his getaway in a stolen car."
2) In a general sense, it can refer to any sudden departure or escape from a situation or place. For instance, "We decided to take a weekend getaway to the beach."
3) It can also be used as an idiomatic expression meaning to succeed in something that was difficult or risky. An example would be, "She pulled off the heist and got away with it."