roof
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noun (plural roofs)
the structure forming the upper covering of a building or vehicle.
(建物･車などの)屋根; 屋上
the top inner surface of a covered area or space; the ceiling:
(地下道･トンネル･ほら穴などの)天井; 穴の上側
e.g. the roof of the cave fell in.
used to signify a house or other building, especially in the context of hospitality or shelter:
e.g. helping those without a roof over their heads
e.g. they slept under the same roof.
verb with object (usually be roofed)
cover with a roof:
〖通例be ～ed〗 〈ガレージなどが〉 【スレートなどで】屋根が付けられる, 覆われる(in, over) «with»
e.g. the yard had been roughly roofed over with corrugated iron.
function as the roof of:
e.g. fan vaults roof these magnificent buildings.
PHRASES
go through the roof informal
1. (of prices or figures) reach extreme or unexpected heights.
2. suddenly become very angry: if anything's not right, he'll go through the roof.
raise the roof
see raise.
the roof of the world
a nickname given to the Himalayas.
hit the roof
informal suddenly become very angry.
DERIVATIVES
roofless | ˈro͞ofləs, ˈro͝ofləs | adjective
ORIGIN
Old English hrōf, of Germanic origin; related to Old Norse hróf ‘boat shed’, Dutch roef ‘deckhouse’. English alone has the general sense ‘covering of a house’; other Germanic languages use forms related to thatch.