Related Clues:
- No. on a road sign
- Delivery path, for short
- U.P.S. driver's assignment: Abbr
- Back muscle, informally
- Something a GPS recalculates: Abbr
- Muscle used in pull-ups, briefly
- 66, e.g.: Abbr
- Small muscle?
- Route, abbr
- GPS output: Abbr
- You'd expect to see it before long
- It may be lined with mailboxes: Abbr
- GPS fig
- Metro line: Abbr
- A mail carrier is assigned one: Abbr