Can I name my daughter Aileen (Ayleen)? What is the meaning of this name?

Aileen or Ayleen is a Turkish name for girls that means "halo of the moon", which is a bright circle that appears around the (usually full) moon on some nights of the year. Aileen is pronounced [(EYE)] + [p(L)ay + s(EE) + (N)] with emphasis on the second syllable. In English it can also be written as Eyeleen, Aylin, Ayleene, Eieleen, Eileen.

Aileen is not an Islamic name but Muslims can use it since it has a good meaning.

Aileen is written as Aylın in Turkish, and the original Turkish pronunciation is [(EYE)] + [p(L)ay + s(I)t + (N)ew], but Persians and other peoples have borrowed this word and extended the final "i" sound.