grace cup

a cup, as of wine, passed around at the end of the meal for the final health or toast.

the drink passed.

Origin of grace cup

First recorded in 1585–95

When they had nearly finished, Gowrie returned to them in the hall, and sent round a grace-cup, in which all pledged the King.

James VI and the Gowrie Mystery |Andrew Lang
The grace-cup was shortly after served round, and the guests marshalled to their sleeping apartment.

The World's Greatest Books, Vol VII |Various
In after times the last cup was called, after her, St. Margaret's cup, or the grace-cup.

Cameos from English History, from Rollo to Edward II |Charlotte Mary Yonge
After which a grace-cup, and then all took their leave, Master Park being last to go as to come.

Joyce Morrell's Harvest |Emily Sarah Holt

Finally he sent Gowrie into the hall, with the grace-cup for the gentlemen, and then called the Master.

James VI and the Gowrie Mystery |Andrew Lang

grace cup

a cup, as of wine, passed around at the end of the meal for the final toast