What is the meaning of the word "dais"?

Definitions:

A low, elevated platform at one end of a room, often where speakers, officials, or honored individuals are seated or stand to address an audience. NOUN
- In the ancient courtroom, the judge sat high on a dais, his stern gaze surveying the proceedings.
A platform raised above the surrounding level to give prominence to the person on it. NOUN
- During the medieval banquet, the honored guests sat upon a raised dais, separate from the rest of the diners.
Refers to a raised platform in a room or hall, typically used for speeches, presentations, or seating distinguished guests. NOUN
- On the raised dais at the town hall, the mayor addressed the assembled crowd about the upcoming festival.