subs. phr. (old).A bed made apple-pie fashion, like what is called a turnover apple-pie, where the sheets are so doubled as to prevent any one from getting at his length between them: a common trick played by frolicsome country lasses on their sweethearts, male relations, or visiters (GROSE). Fr. lit en portefeuille.
1811. C. K. SHARPE, Correspondence (1888), i. 466]. After squeezing myself up, and making a sort of APPLE-PYE BED with the beginning of my sheet.
1883. The Saturday Review, 3 Nov., 566, 2. Some evil-disposed persons have already visited his room, MADE HIS BED INTO AN APPLE-PIE, plentifully strewn with hairbrushes and razors.