mournival
In the game of gleek, and other card games, a set of four cards of the same face value.
obsolete
Before George, there's not enough to rig out a Mournival of VVhores: they'l think me grown a meer Curmudgeon. Mercy on me, how will this glorious Trade be carri'd on, with ſuch a miſerable Stock!
A set of four people or things; a quartet.
archaic, rare
It was, as we shall have occasion to emphasize, not an accidental circumstance that the terror-novel was in the fullest flush of popularity during the seventeen-nineties, and it was also in this decade that Mrs. Radcliffe wrote and published her most characteristic works, A Sicilian Romance, 1790; The Romance of the Forest, 1791; The Mysteries of Udolpho, 1794; and The Italian, or, The Confessional of the Black Penitents, 1797, a mournival of Gothic masterpieces.
Where it comes from
Perhaps from French mornifle (“a card game”).
Adapted from the Wiktionary entry mournival (CC BY-SA 4.0).