Sabke Morde means "dead style" or something that is done a "dead way" in Persian language.
Sabke Morde debut album has the title "Khatabeye Tadfin" which means "The Funeral Oration", and the lyrics are from Ahmad Shamlou's poems, describing a moment of remembrance in the funeral of people who have died in the battle against kings and monarchs, so that others would experience a better life. In other words, it's a "dead way" of doing something passionate and heroic.