ruin

noun

1. (countable, in-plural, sometimes)The remains of a destroyed or dilapidated construction, such as a house or castle.

   “The Veian and the Gabian towirs shall fall, / And one promiscuous ruin cover all; / Nor, after length of years, a stone betray / The place where once the very ruins lay.”

   “The labour of a day will not build up a virtuous habit on the ruins of an old and vicious character.”

   “A canister of flour from the kitchen had been thrown at the looking-glass and lay like trampled snow over the remains of a decent blue suit with the lining ripped out which lay on top of the ruin of a plastic wardrobe.”

   “Dr. Manuel: No one is saved. The age of humanity is ended. Soon, only ruin and corpses will remain.”

   “Not only is Jerusalem not a ruin, but she is at the height of her glory compared to all of Jewish history!”

2. (uncountable)The state of being a ruin, destroyed or decayed.

   “The monastery has fallen into ruin.”

3. (uncountable)Something that leads to serious trouble or destruction.

   “Gambling has been the ruin of many.”

   “The errors of young men are the ruin of business.”

   “The Bat—they called him the Bat.[…]. He[…]played a lone hand,[…]. Most lone wolves had a moll at any rate—women were their ruin—but if the Bat had a moll, not even the grapevine telegraph could locate her.”

4. (countable, uncountable)The act of ruining something.
5. (abbreviation, alt-of, clipping, countable, uncountable)The act of ruining something.
6. (countable, obsolete, uncountable)A fall or tumble.

   “His ruin startled th’ other steeds.”

7. (countable, uncountable)A change that destroys or defeats something; destruction; overthrow.

   “the ruin of a ship or an army”

   “the ruin of a constitution or a government”

   “the ruin of health or hopes”

   “Oh Portius, is there not some choſen Curſe, Some hidden Thunder in the Stores of Heav’n, Red with uncommon Wrath, to blaſt the Man Who owes his Greatneſs to his Country’s Ruin?”

   “Ruin seize thee, ruthless king!”

8. (uncountable)Complete financial loss; bankruptcy.

verb

1. (transitive)To cause the fiscal ruin of; to bankrupt or drive out of business.

   “With all these purchases, you surely mean to ruin us!”

   “In one way, indeed, he bade fair to ruin us; for he kept on staying week after week, and at last month after month, so that all the money had been long exhausted...”

2. To destroy or render something no longer usable or operable.

   “He ruined his new white slacks by accidentally spilling oil on them.”

3. To destroy (e.g. a city) so as to leave ruins.

   “By the fireside there are old men seated, / Seeing ruined cities in the ashes.”

4. To upset or overturn the plans or progress of, or to have a disastrous effect on something.

   “My car breaking down just as I was on the road ruined my vacation.”

5. To make something less enjoyable or likeable.

   “I used to love that song, but being assaulted when that song was playing ruined the song for me.”

6. To make (someone) have a ruined orgasm.
7. To reveal the ending of (a story); to spoil.
8. (obsolete)To fall into a state of decay.

   “Though he his house of polisht marble build, / Yet shall it ruine like the Moth's fraile cell”

9. (historical, transitive)To seduce or debauch, and thus harm the social standing of.

   “The young libertine was notorious for ruining local girls.”