Meaning and name origin
Merline \m(e)-rli-ne, mer-line\ as a girl's name is of Old French origin, and the meaning of Merline is "blackbird". Merline is a variant of Merle (Old French): the name also developed as a variant of Muriel and Meriel.
Merline is not a popular first name for females and an equally uncommon surname or last name for all people (2000 U.S. Census).
Displayed below is a comparison of the popularity of the girl name Merline and its variant forms. The only popular variation form ranked in the Top 1000/100 is Merle. (2014 statistics).
Merline is also pronounced similarly to Marlane, Marlene, Marlin, Marline, Marlinn, Marlyne and Merlyn. Other suggested similar baby names are Maraline, Marlina, Meline, Merlina, Perline and Verline. These names tend to be more commonly used than Merline.