1. place; location
E.g.: 住所 (address), 場所 (location)
2. that which is...; the thing that... (indicates the content of an action or effect)
E.g.: 所持 (possession), 所信 (belief)
3. facility for performing a specific task or function
E.g.: 所長 (head of an office), 役所 (government office)
4. passive auxiliary particle