| Trader 1. (n.) One engaged in trade or commerce; one who makes a business of buying and selling or of barter; a merchant; a trafficker; as, a trader to the East Indies; a country trader. 2. (n.) A vessel engaged in the coasting or foreign trade. Thesaurus Entries broker, businessman, buyer, chandler, dealer, distributor, importer, jobber, marketer, merchandiser, merchant, middleman, monger, purchaser, regrater, retail dealer, retail merchant, retailer, salesman, salesperson, saleswoman, seller, shopkeeper, storekeeper, tradesman, tradeswoman, trafficker, vendor, wholesaler |