To "evacuate ___" means to leave a place quickly because of a disaster or emergency. Some examples are:
- People "evacuate" a building when it's on fire.
- In science fiction movies and TV shows, the people on a space ship sometimes have to evacuate if their ship is attacked.
- You might have to evacuate your home if there's a hurricane, flood, or other natural disaster.
You can use the word "evacuate" with a word after it like this:
As the bombing started, people tried to evacuate the city.
Or you can avoid putting something after "evacuate":
As the bombing started, people tried to evacuate.