a. Rom. Antiq. Obs. [f. L. lūstric-us, f. LUSTRUM: see -ICAL.] Pertaining to purification. Only in lustrical day (L. dies lustricus): see quots.
1623. Cockeram, Lustricall day, ones christning day.
1741. Middleton, Cicero, I. i. 6. This name was … imposed … on the ninth day, called the lustrical, or day of purification.
