In Islamic philosophy, Alamin (عالمين) or Alemin (lit. worlds) refers to the Universe or Worlds, or all that exists. This includes humans, plants, animals, earth, stars, jinn and angels.
It is not to be confused with 'Al Amin', or 'Al Ameen' (Arabic: الامين), meaning 'the trustworthy,' which was one of the nicknames given to Muhammad.