A shakeout is when people or things are moved or changed to see what happens or to make sure everything is okay.
A shakeout can make people think of testing, making sure things are safe, or getting ready for something big.
Examples:
We had a shakeout to see if the building was safe.
The teacher did a shakeout to make sure everyone was here.
The shakeout made sure everything was okay.
The shakeout was funny because everyone had to move around.
The shakeout was so big, it made the ground shake!
The shakeout was important because it made sure everything was safe.