time capsule
idiomPart ofcapsule
time capsule — idiom
1. a container filled with objects and documents from a particular time, buried or
1.idiom
Definition
a container filled with objects and documents from a particular time, buried or hidden so that people in the future can find it and learn about the past
Example
The school buried a time capsule in 1990 and opened it at the reunion twenty-five years later.