Rēd'-lĕt'ter, a.
a. Of, relating to, or marked by, red letters.
Red-letter day, one that is a fortunate or auspicious day;— so called because the holy days, or saints' days, were marked in the old calendars with red letters. Grose.
a. Of, relating to, or marked by, red letters.
Red-letter day, one that is a fortunate or auspicious day;— so called because the holy days, or saints' days, were marked in the old calendars with red letters. Grose.