Definition of couture noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more. Define couture. couture synonyms, couture pronunciation, couture translation, English dictionary definition of couture. n. 1. The business of designing, making, and selling highly fashionable, usually custom-made clothing. 2. Dressmakers and fashion designers considered as a... couture definition: high-fashion designing and dressmaking. Check meanings, examples, usage tips, pronunciation, domains, and related words. Discover expressions like ... COUTURE meaning: 1. the designing, making, and selling of expensive fashionable clothing that is made by hand (= not…. Learn more.