A more thorough explanation:

PATRUUS

Patruus is a Latin term used in Roman and civil law to refer to a paternal uncle, that is, the brother of one's father.

1. Marcus was very close to his patruus, who often took him on hunting trips.

2. According to Roman law, a patruus had certain rights and responsibilities towards his nephew.

The examples illustrate the definition of patruus by showing how it refers to the relationship between a nephew and his father's brother. In the first example, Marcus has a close relationship with his patruus, which suggests that the two have a familial bond. In the second example, the reference to Roman law highlights the legal significance of the patruus-nephew relationship, indicating that it was an important aspect of family and inheritance law in ancient Rome.