Lally \l(al)-ly\ as a girl's name is a variant of Eulalia (Greek), Lalage (Greek) and Lallie (Greek), and the meaning of Lally is "well-spoken; to chatter or babble".
The baby name Lally sounds like Laily, Lalla, Lolly and Lilly. Other similar baby names are Cally, Kally, Hally, Mally, Sally, Tally, Vally and Wally.