Jillayne \j(i)-llay-ne\ as a girl's name is a variant of Jill and Jillian. See for origin and meaning of Jillayne.
The baby name Jillayne sounds like Jillane, Jillanne and Jillaine. Other similar baby names are Allayne, Ellayne, Jillianne, Jillene, Jillana, Jillan, Jillyanne and Jilliane.