ceilingyoudaoicibaDictYouDict[ceiling 词源字典]
ceiling: [14] Ceiling is something of a mystery word. It originally signified the internal lining of any part of a building, including walls as well as roof (the modern sense ‘overhead inside surface of a room’ began to crystallize out in the 16th century), and the material of which it was made took in wooden planks and even tapestry hangings, as well as plaster. But where it comes from is not at all clear.

It has no apparent relations in other modern European languages, and the likeliest candidate as a source may be Latin caelāre ‘carve, engrave’. This is perhaps endorsed by an item in the accounts of the Lord High Treasurer of Scotland, 1497, revealing how a ‘carver’ was paid £2 14s for ‘the ceiling of the chapel’ – an indication that the underlying notion of ceiling may be ‘carved internal surface of a room’.

[ceiling etymology, ceiling origin, 英语词源]
drape (v.)youdaoicibaDictYouDict
c. 1400, "to ornament with cloth hangings;" mid-15c., "to weave into cloth," from Old French draper "to weave, make cloth" (13c.), from drap "cloth, piece of cloth, sheet, bandage," from Late Latin drapus, 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.
hanging (n.)youdaoicibaDictYouDict
c. 1300, "act of putting to death on the gallows," verbal noun from hang (v.). Meaning "piece of drapery on the wall of a room" is late 15c. Hangings "curtains, tapestry" is from 1640s.
paper (v.)youdaoicibaDictYouDict
1590s, "to write down on paper," from paper (n.). Meaning "to decorate a room with paper hangings" is from 1774. Related: Papered; papering. Verbal phrase paper over in the figurative sense is from 1955, from the notion of hiding plaster cracks with wallaper.