Shieldmaiden 

1. A shieldmaiden was a woman who had chosen to fight as a warrior in Scandinavian folklore and mythology;

2. A woman who sings for a heavy metal or hard rock band.

1. A shield maiden's grave was found in Norway yesterday.

2. That chick in Arch Enemy can really growl! She is a true Shieldmaiden!

Shieldmaiden by lucentrue February 4, 2010

Shieldmaiden 

1. A female version of a whiteknight.

2. A woman who comes to the aid of another person publically or online to speak in that person's defense. (mostly without the person's consent.)

"I was debating with a woman online when this Shieldmaiden came out of nowhere and called me 'Sexist!'."

Shieldmaiden by Your Boy Pat August 9, 2018