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Definition of Mercy killing
1. Noun. The act of killing someone painlessly (especially someone suffering from an incurable illness). 
Definition of Mercy killing
1. Noun. Euthanasia. ¹
¹ Source: wiktionary.com
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1. Noun. The act of killing someone painlessly (especially someone suffering from an incurable illness). 
1. Noun. Euthanasia. ¹
¹ Source: wiktionary.com