What is Privileged Copyholds?

Legal Definition
Those copyhold estates which are said to be held according to the custom of the manor, and not at the will of the lord, as common copyholds are. They include customary freeholds and ancient demesnes. 1 Crabb, Real Prop. p. 709, § 919.
-- Black's Law Dictionary
Legal Definition
Those copyholds which are held according to the custom of the manor and not according to the will of the lord. —Bouvier Law Dictionary.
-- Ballentine's Law Dictionary