Sileas \s(i)-leas\ as a girl's name is a variant of Cecilia (Latin, Old Welsh), and the meaning of Sileas is "blind; sixth".

The baby name Sileas sounds like Celes, Celesse, Celsea, Cilicea and Salcia. Other similar baby names are Sile, Silia, Lilias, Lillas, Lilas, Silja, Silya and Silva.