Meaning

1. paper (sheet material typically used for writing on or printing on (or as a non-waterproof container), usually made by draining cellulose fibres from a suspension in water)
2. (colloquial) paper (official letter that has the validity of a document)
3. (colloquial) dollar (official currency of the United States)
4. paper (open hand in the game of rock paper scissors)
5. (obsolete) paper (any paper money)
6. (obsolete) gulden (old currency of the Netherlands)
7. bundle of paper
8. book
9. letter