The Vietnamese word "cựu trào" is a noun that refers to a "previous dynasty" or "former era." It is often used to describe a historical period that has already passed, particularly in the context of dynasties in Vietnam or other historical regimes.
While "cựu trào" primarily means "previous dynasty," it can also imply any previous trend or style in various contexts beyond just political history. For instance, you can use it to talk about previous artistic movements or cultural trends.