Longman Dictionary of Contemporary English homepage

Date: 1300-1400
Language: Old French
Origin: ruine, from Latin ruina

ruin

2 noun
     
ruin2
1 [uncountable] a situation in which you have lost all your money, your social position, or the good opinion that people had about you:
small businesses facing financial ruin
be on the road to ruin (=be doing something that will make you lose your money, position etc)
2 [countable] also ruins the part of a building that is left after the rest has been destroyed:
an interesting old ruin
the ruins of a bombed-out office block
3

the ruins of something

the parts of something such as an organization, system, or set of ideas that remain after the rest have been destroyed:
the ruins of a government that once held so much promise
4

be/lie in ruins

a) TBB if a building is in ruins, it has fallen down or been badly damaged
b) if someone's life, a country's economy etc is in ruins, it is affected by very great problems:
Her marriage was in ruins.
5

fall into ruin

also go to ruin if something goes to ruin, it gets damaged or destroyed because no one is taking care of it:
He had let the farm go to ruin.
6

be the ruin of somebody

to make someone lose all their money, their good health, the good opinion that other people have of them etc:
Drinking was the ruin of him.

➔ go to rack and ruin

at rack1 (4)

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