The noun ruin has 6 senses (first 2 from tagged texts)
1. (3) ruin, ruination -- (an irrecoverable state of devastation and destruction; "you have brought ruin on this entire family")
2. (2) ruin -- (a ruined building; "they explored several Roman ruins")
3. dilapidation, ruin -- (the process of becoming dilapidated)
4. ruin, ruination -- (an event that results in destruction)
5. downfall, ruin, ruination -- (failure that results in a loss of position or reputation)
6. laying waste, ruin, ruining, ruination, wrecking -- (destruction achieved by causing something to be wrecked or ruined)
Overview of verb ruin
The verb ruin has 6 senses (first 1 from tagged texts)
1. (4) destroy, ruin -- (destroy completely; damage irreparably; "You have ruined my car by pouring sugar in the tank!"; "The tears ruined her make-up")
2. ruin -- (destroy or cause to fail; "This behavior will ruin your chances of winning the election")
3. bankrupt, ruin, break, smash -- (reduce to bankruptcy; "My daughter's fancy wedding is going to break me!"; "The slump in the financial markets smashed him")
4. ruin -- (reduce to ruins; "The country lay ruined after the war")
5. deflower, ruin -- (deprive of virginity; "This dirty old man deflowered several young girls in the village")