Yeah people usually have different definitions of overweight. Having a just little bit of overweight based on their height (but well distributed) usually I wouldn't mind it. But that's relative. Overweight girls as far as we generally understand or even chubby girls, noup.
I think it depends on whether she is VERY overweight, like disproportionate or something and also if her body is too short. But being overweight doesn't make someone unattractive, it's just the way they act and dress that matters most I think. Also, if the girl's face is pretty, I think it changes guys' opinion a little.
I work my arse off to keep in shape. I expect similar from anyone I date. I have no problems with body types, even voluptuous girls. But overweight is my immediate deal breaker. But weight is also an easy problem to solve. Just take a year off to eat well and exercise (be very active). Problem solved.