What is Censo?

Legal Definition
In Spanish and Mexican law. An annuity. A ground rent The right which a person acquires to receive a certain annual pension, for the delivery which he makes to another of a determined sum of money or of an immovable thing. Civ. Code Mex. art. 3206. See Schm. Civil Law, 149, 309; White, New RecOp. bk. 2, c. 7, § 4.
See also
-- Black's Law Dictionary
Legal Definition
(Spanish) A ground-rent.
-- Ballentine's Law Dictionary