Myrilla \m(y)-rilla, myr(il)-la\ as a girl's name is a variant of Mira (Latin, Slavic, Hindi) and Miranda (Latin), and the meaning of Myrilla is "wonderful; peace; propserous; worthy of admiration".
The baby name Myrilla sounds like Marilla, Myrella, Mirilla and Myrrilla. Other similar baby names are Cyrilla and Syrilla.