Ailse \a(i)-lse, ail-se\ as a girl's name is a variant of Ailsa (Old Norse), and the meaning of Ailse is "island of Alfsigr".
The baby name Ailse sounds like Ailis, Alyse, Allyse, Alise, Alisse, Eilise, Ilse, Else and Ellse. Other similar baby names are Ailie and Ailee.