Roman law 
noun [mass noun]
The law code of the ancient Romans forming the basis of civil law in many countries today.It was much influenced by notions of canon law and Roman law, which at this time was being ‘received’ in many European countries....
- The one factor that codes, capitularies, and formularies had in common was that they were part of a written law deeply influenced by Roman law and the Bible, and representative of a new political culture.
- In other American slave societies, which based their slave law on Roman law, slaves were tried in the same courts as free people, although under discriminatory legal codes.