Billa \b(il)-la\ as a girl's name is a variant of Billie (Old English) and Wilhelmina (Old German), and the meaning of Billa is "will helmet, protection".

The baby name Billa sounds like Bella, Billy and Billi. Other similar baby names are Dilla, Willa, Milla, Cilla, Lilla, Rilla and Zilla.