Gertie \ge(r)-tie\ as a girl's name is a variant of Gertrude (Old German), and the meaning of Gertie is "strong spear".
The baby name Gertie sounds like Gerte, Gardie, Gerty, Gerta and Gert. Other similar baby names are Bertie, Berti, Berte, Artie, Georgie, Jerrie, Gerri, Geri, Gerdine, Gertina, Martie, Myrtie, Mirtie, Berdie, Verdie, Veritie and Veretie.