第だい一いっ種しゅ郵ゆう便びん物ぶつ

noun

first-class mail

Official postal term for standard first-class mail in Japan, covering letters, postcards, and similar items.

• 第だい一いっ種しゅ郵ゆう便びん物ぶつには手て紙がみやはがきが含ふくまれます。

  First-class mail includes letters and postcards.