The word "magister" is a masculine noun in Latin. It can be translated as "teacher" or "master". In the context of this question, "teacher" is the most appropriate translation, as it is a common and well-known meaning of the word. "Master" is also a possible translation, but it may not be as commonly used in this context. The other options, such as "lord", "queen", "slave", and "wall", do not accurately reflect the meaning of "magister" in Latin.