* A military commander: A Legatus legionis was a commander of a Roman legion, typically a senior officer appointed by the emperor or a general.
* A diplomatic representative: A Legatus pro praetore was an official sent to govern a province in the absence of the proconsul or propraetor.
The term Legatus can also be used in modern English to describe a representative or delegate, especially one with a high-ranking position.
Here are some examples:
* A legatus of the emperor would have been an ambassador representing the Roman emperor in a foreign country.
* A legatus of the Roman senate would have been a delegate representing the senate in a particular matter.
* The governor of a state could be considered a legatus of the federal government.
In conclusion, "legatus" is a versatile word that can be used to describe various types of representatives, but it primarily relates to ancient Roman history and its political and military structures.