Definitions of mercy:

• noun:   alleviation of distress; showing great kindness toward the distressed

  Example: "Distributing food and clothing to the flood victims was an act of mercy"

• noun:   something for which to be thankful

  Example: "It was a mercy we got out alive"

• noun:   a disposition to be kind and forgiving
• noun:   the feeling that motivates compassion
• noun:   leniency and compassion shown toward offenders by a person or agency charged with administering justice

  Example: "He threw himself on the mercy of the court"

• name:  A female given name (rare: 1 in 33333 females; popularity rank in the U.S.: #1707)
• name:  A surname (very rare: popularity rank in the U.S.: #39881)