Akin to Carotte's PEI question, I've seen posters us "Big Box Store" . . . I always assumed that they were referring to Home Depot or Lowes or some other hardware/home improvement type center.
However, in some posts it seems like the poster is talking more like a Walmart type store.
Where did the term "Big Box Store" come from and what is it's true meaning?
I've always interpreted "big box store" as a huge chain store that sells many different types of things under one roof, usually in a building that looks like a big box
I'd include Wal-Mart, Target, K-Mart, Sam's Club, Costco, etc. all as big box stores.
ETA: another qualification is how, like Wal-Mart, big box stores don't have a real stockroom - the extra stock is all out on the shelves.