Black's Law Dictionary (2nd edition)dictionaries

A Datu

L. Lat. From the date. Haths v. Ash, 2 Salk. 413. A die datûs, from the day of the date. Id.; 2 Crabb, Real Prop. p. 248, § 1301; Hatter v. Ash, 1 Ld. Raym. 84. A dato, from the date. Cro. Jac. 135.

Source: Black's Law Dictionary 2nd Ed (1910)