Definition of "Mercy" :
noun: leniency and compassion shown toward offenders by a person or agency charged with administering justice
"He threw himself on the mercy of the court."
noun: alleviation of distress; showing great kindness toward the distressed
"Distributing food and clothing to the flood victims was an act of mercy."
noun: a disposition to be kind and forgiving
noun: the feeling that motivates compassion
noun: something for which to be thankful
"It was a mercy we got out alive."