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

Type of: mail

• squasher
• squashy
• squat
• Squatina
• Squatina squatina
• Squatinidae
• squatness
• squatter
• squattiness
• squatting
• squatty
• squaw
• squaw corn
• squaw grass
• squaw huckleberry
• squaw man
• squawbush
• squawk
• squawk box
• squawker
• squawky
• squawroot
• squeak
• squeak by
• squeak through