Quarto die post
Defined in 3 dictionaries — Ballentine's (1916), Black's (1910), Kinney (1893)
Ballentine's Law Dictionary
James A. Ballentine · 1916
The day following the third day of grace allowed for appearance.
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
Lat On the fourth day after. Appearance day, in the former English practice, the defendant being allowed four days, inclusive, from the return of the writ, to make his appearance.
A Law Dictionary and Glossary
George C. Kinney · 1893
I I. On the fourth day after; the name given to the fourth day inclusive after the return of a writ, on which, if a desufficient Otherwise called the appear- (jnash. To overthrow; to annul; to make void; to set aside a writ or other proceeding for some merely formal defect