It means amazing
Leena Lander's birth name is Leena Orvokki Pyhnen.
Leena Kokko's birth name is Marja-Leena Kokko.
Leena Pesonen's birth name is Leena Aulikki Pesonen.
Leena Peltonen's birth name is Leena Paivi Peltonen.
Leena Lehtolainen's birth name is Leena Katriina Lehtolainen.
Leena Havukainen's birth name is Leena Kristiina Havukainen.
Leena Virtanen's birth name is Leena Kristiina Virtanen.
Leena Takala's birth name is Takala, Marja-Leena.
Leena Krohn's birth name is Leena Elisabeth Krohn.
Leena Suomu's birth name is Leena-Sisko Tuulikki Suomu.
Yes, it is a Muslim Arabic name that mean friend in English.
If you mean a Muslim name then I say maybe Humairah will be better.