Clue: Letter-routing abbr.

Answer: ATTN

Length: 4

---

Similar Clues:

• Letter routing abbr. (ATTN with 4 letters)
• Letter jumble (Abbr.) (ANAG with 4 letters)
• Abbr. on a letter to a soldier (APO with 3 letters)
• Receiver of private letters?: Abbr. (APO with 3 letters)
• Abbr. on a letter to Iraq, since 2003 (APO with 3 letters)
• Word often abbreviated to its middle letter, in texts (ARE with 3 letters)
• Letter wearer: Abbr. (ATH with 3 letters)
• Letter getter: Abbr. (ATH with 3 letters)
• Business letter abbr. (e.g. ATT with 3 letters)
• Letter abbr. (e.g. ATT with 3 letters)