1. line (a straight path through two or more points) (mathematics)

2. line (a piece of spoken dialogue in a script)

3. line (a path for electrical current)

4. telephone line (a physical telephone connection or a single telephony account)

5. party line (an established policy that politicians should adhere to)

6. line (similar directives in business and other contexts) (figurative, figuratively)

7. policy (the actual regulations and behavior of government agencies)

8. line (a long thin pile of cocaine or other drug) (slang)

9. linea, Spanish line (a traditional small unit of length, equivalent to 1.9 mm) (historical)

10. queue (British), line (US)