Category killer
A category killer is a retailer, often a big-box store, that specializes in and carries a deep product assortment within a given category and through selection, pricing and market penetration obtains a massive competitive advantage over other retailers. Chains such as Barnes & Noble, Best Buy, CompUSA, Linens 'n Things, and Staples are considered category killers.
Once typically found in power centers, increasingly they are found in or adjacent to repurposed traditional malls.
