false bottom (noun)

1. During the 18th century, pirates often used ships with false bottoms to hide their treasures from authorities.

2. In the horror movie, the protagonist discovers a secret compartment with a false bottom in an old wooden chest.

3. According to Greek mythology, the god Hermes used a box with a false bottom to transport the souls of the dead to the Underworld.

4. In the anime series, the main character uncovers a hidden false bottom inside a mysterious ancient artifact.