The term "San" has multiple meanings depending on its context.
1) In Spanish, "San" is a title used before the names of saints, such as San Francisco or Santa Ana. It means 'Saint'.
2) In Japanese, "San" (さん) is an honorific suffix used to show respect when addressing someone, similar to Mr., Mrs., Ms., or Miss in English.
3) In the Philippines, particularly in the southern island of Mindanao, "san" is a term used by Muslims to refer to non-Muslims, regardless of their religion (e.g. Christians are called "harani san," meaning infidels).