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

Type of: mail

• antidiuretic drug
• antidiuretic hormone
• Antido
• Antidorcas
• Antidorcas euchore
• Antidorcas marsupialis
• antidotal
• antidote
• antidromic
• antielectron
• chylifactive
• chylifactory
• chyliferous
• chylific
• chyloderma
• chylomicron
• chylous
• chyme
• chymosin
• Chytridiaceae
• Chytridiales
• Chytridiomycetes
• Château-Thierry
• chèvre
• ci