ceil
/siːl/verb
with obj.(一般作be ceiled)
- archaic line or plaster the roof of (a building)〈古〉给（建筑物屋顶）装镶板或抹灰泥。
词源
late Middle English （in the sense 'line (the interior of a room) with plaster or panelling'）： perhaps related to Latin celare, French céler 'conceal'.