Shah Mat
Checkmate: from Shah mat "the king is dead", from the Persian shah for "king" and the Arabic mat for "died"
Origin of the word
The term checkmate is an alteration or Hobson-Jobson of the Persian phrase "Shāh Māt" which means, literally, "the King is ambushed" (or "helpless" or "defeated"). It does not literally mean "the King is dead", although that is a common misconception, as chess reached Europe via the Islamic world, and Arabic māta مَاتَ means "died", "is dead".[1]
Moghadam traced the etymology of the word mate. It comes from a Persian verb mandan, meaning "to remain", which is cognate with the Latin word manco. It means "remained" in the sense of "abandoned" and the formal translation is "surprised", in the military sense of "ambushed" (not in the sense of "astonished"). So the king is in mate when he is ambushed, at a loss, or abandoned to his fate (Davidson 1981:70-71).
The term checkmate has come to mean in modern parlance an irrefutable and strategic victory
Since I have two Checkmates in my driveway I thought it was a fitting screenname.