A more thorough explanation:

A Senator of the College of Justice is a judge in the Court of Session in Scots law. They are also known as a Lord of Session.

For example, Lord Carloway is a Senator of the College of Justice and the current Lord President of the Court of Session in Scotland.

This term is important in understanding the Scottish legal system and the roles of judges within it. It helps to clarify the hierarchy of judges and their responsibilities within the Court of Session.