1. club, circle, coterie

2. motive, motivation

3. loving equally and without discrimination

4. a seal or stamp made from copper

5. the shape or a person reflected in someone's pupil (of the eye)

6. a copper statuette in the shape of a human being, designed with small holes all over the body, for use in studying acupuncture (traditional Chinese medicine)

7. a word used by upper-class officials to refer to colleagues who were of the same status and respected one another (historical)