mīm, sīn, dāl
3 names share this root — every one of them carries a thread of the same meaning.
Masd is an Arabic name for boys that means highland, plateau, a cold area of land that is high above sea level.
No independent English meaning found for this name in these sources. Its Arabic spelling matches a real word in the Quran — see the citation below.
Eternity, Everlasting.