Related Clues:
- Word with voice or express
- Something you get Saturday, but not Sunday
- Armor
- Knightly wear
- Knights' garb
- 'You've Got --'
- Business identity
- Send, as a postcard
- It might be registered
- It may be express
- Business identifier
- Postmarked pieces
- Push the envelope?
- Post office delivery
- It's sometimes certified