E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Lady in the Sacque.
The apparition of this hag forms the story of the Tapestried Chamber, by Sir Walter Scott.
1
An old woman, whose dress was an old-fashioned gown, which ladies call a sacque; that is, a sort of robe completely loose in the body, but gathered into broad plaits upon the neck and shoulders.