From Longman Business Dictionarycategory killercat‧e‧go‧ry kil‧ler /ˈkætəgəri ˌkɪlə-gɔːri ˌkɪlər/ noun [countable] MARKETING a very big specialized international CHAIN STORE that causes local competitors to go out of businessCategory killers focus on one area of product, offering wider selections and deeper price cuts.
