Yeah, I've adopted the term A-shirt - or just racerback tank - but I grew up knowing them as WBs. Especially in my neighborhood, you immediately knew what that meant: the undershirts-worn-as-shirts favored by thug-ish, aggressive males in the area. Who knows if they really beat their wives, but none of them ever objected to the term, as far as I heard. o_0
I understand why no one wants to feel like their style inspiration comes from an abusive or violent group, but well the stereotype is there for a reason. Aggressive guys sort of pioneered wearing men's underwear as street clothes... that said, it has been a long time, and there are so many more iterations of those tanks than the standard white. I don't think a jeweled ribbed tank in royal purple can honestly be called a WB. No need for the association there.