What does osho-san mean in Japanese?

"Osho" is usually translated as "teacher". It is the term of address used in respect for one who teaches. In Zen Buddhism, before being honoured by his master with the title "Osho" in, a monk is trained for several years. "Osho" comes after the name of the teacher, or may be used on it's own to address the teacher. The suffix "-san" is added as it is to other Japanese names as a term of respect.