1. A woman you find at frequenting the bar, pub or local hang out.
2. A female sexual interest/conquest obtained from the bar, pub or other alcoholic establishment.
Bar (reference to location) Taco (vagina)
"Hey, did you see that red-head over on the other end?" Yeah, she's definitely a nice piece bar taco"
"Dude, heard you brought home some bar taco last night!"
"I'm totally going out for some bar tacos tonight, who's with me?"