The first name Merle is ♀ female and ♂ male.
Merle is a name for girls and boys (e.g. in France). It derives from the Latin name Merula. Besides, Merle derived from Muriel or the Irish name Muirgel.
Merle means “blackbird” (from Latin “merula”) and “bright sea” (from Gaelic “muir” = sea + “geal” = bright).