1. Mail that includes letters and postcards and packages sealed against inspection
   - first class, 1st class, first-class mail

Type of: mail

• mouthlike
• mouthpart
• mouthpiece
• mouthwash
• mouthy
• mouton
• movability
• movable
• movable barrier
• movable feast
• movableness
• movably
• move
• move around
• move back
• move back and forth
• move in
• move in on
• move into
• move involuntarily
• move on
• move out
• move over
• move reflexively
• move through