drapery (n.)

c. 1400, drapen, "to ornament with cloth hangings;" mid-15c., "to weave into cloth," from Old French draper "to weave, make cloth" (13c., in Modern French "to cover with mourning-cloth, dress, drape"), from drap "cloth, piece of cloth, sheet, bandage," from Late Latin drapus, which is perhaps of Gaulish origin (compare Old Irish drapih "mantle, garment"). Meaning "to cover with drapery" is from 1847. Meaning "to cause to hang or stretch out loosely or carelessly" is from 1943. Related: Draped; draping.