The term DENIM FABRIC can be summarized as a type of fabric made from cotton twill that is used to make JEANS. The term is derived from the French phrase 'serge de Nîmes, ' which translates to 'fabric from Nîmes.' It is a sturdy, durable fabric that is often used for workwear and casual clothing. The most common use of denim fabric is for making JEANS, which are typically referred to as 'JEANS' or 'denim JEANS.' The four-letter word for this fabric is JEAN.