Definition - What does Rest mean?
To rest means to cease, to stop or to conclude. It means that no further action will be taken.
This term is commonly used when a lawyer in a trial has finished presenting all of their evidence. They may then say: "I rest my case." After this is said, the jury often deliberates.
Justipedia explains Rest
At the end of a trial, it is helpful when attorneys let the judge know when their case rests. This is so that the judge and the entire court knows that the attorney has made their full argument, and that there are no other factors to present.
Typically, before a lawyer rests their case, they will present an array of evidence. This evidence is designed to support their position on the matter at hand.