Definition of "Ruin" :

noun: destruction achieved by causing something to be wrecked or ruined

noun: a ruined building

"They explored several Roman ruins."

noun: failure that results in a loss of position or reputation

noun: an event that results in destruction

noun: the process of becoming dilapidated

noun: an irrecoverable state of devastation and destruction

"You have brought ruin on this entire family."

verb: fall into ruin

verb: deprive of virginity

verb: destroy completely; damage irreparably

"You have ruined my car by pouring sugar in the tank!."

verb: reduce to ruins

"The country lay ruined after the war."

verb: reduce to bankruptcy

verb: destroy or cause to fail

"This behavior will ruin your chances of winning the election."