What is Surrogate's Court?

Legal Definition
In the United States. A state tribunal, with similar jurisdiction to the court of ordinary, court of probate, etc., relating to matters of probate, etc. 2 Kent, Comm. 409, note 6. And see Robinson v. Fair, 128 U. S. 53, 9 Sun. Ct. 30, 32 In Ed. 415; In re Hawley, 104 N. Y. 250, 10 N. E. 352.
-- Black's Law Dictionary