The term 'STIR-frier' is a combination of two words: 'STIR' and 'fryer'. A STIR-fryer is a type of cooking device that uses high heat to quickly cook food. It is typically used to cook vegetables, meats, and other ingredients in a wok, which is a round-bottomed cooking vessel with three letters - WOK. STIR-frying is a popular cooking technique in many Asian cuisines, as it allows for quick and flavorful cooking.