letters.Wills & estates. A court order giving official authority to a fiduciary to conduct appointed tasks. • Examples are letters of administration, letters of conservatorship, letters of guardianship, and letters testamentary. Unif. Probate Code § 1-201(23). See LETTER(2). [Cases: Executors and Administrators  27; Guardian and Ward  16.C.J.S. Executors and Administrators § 79.]

[Blacks Law 8th]