From Longman Business Dictionary
outfitterout·fit·ter /ˈaʊtfɪtə-ər/ noun [countableC]COMMERCE1British EnglishBrE old-fashioned a shop that sells men’s clothesa men’s outfitters
2American EnglishAmE a shop selling equipment for outdoor activities such as campingMore outfitters are diversifying into organizing expeditions on top of their retail activities.