Clue: Brother or brother-in-law: Abbr.

Answer: REL

Length: 3

---

Similar Clues:

• His orchestra once included Hoagy Carmichael and the Dorsey brothers (EDLANG with 6 letters)
• Organization of lawyers (Abbr.) (ABA with 3 letters)
• Big Board's brother: Abbr. (AMEX with 4 letters)
• A Marx Brother instrument, to a Mario Brother (ARPA with 4 letters)
• Infamous jealous brother (CAIN with 4 letters)
• They may be burned in order to preserve information: Abbr. (CDRS with 4 letters)
• "Law & Order" investigator: Abbr. (DET with 3 letters)
• Marx brother's instrument (HARP with 4 letters)
• Instrument for a Marx Brother (HARP with 4 letters)
• Vaudeville comic brother who was part of the United States Croquet Hall of Fame inaugural class (HARPO with 5 letters)