The term "designer" has multiple meanings and can refer to different professions or products depending on context.
In a general sense, a designer is someone who creates something, often with an emphasis on aesthetics and functionality. This could be referring to a fashion designer, who designs clothing, accessories, or even furniture; an industrial designer, who designs everyday objects such as appliances, vehicles, or consumer goods; or even a web designer, who creates the visual layout and interface of websites.
In some cases, "designer" can also refer to a brand or product that is perceived as high-quality or luxurious. For example, someone might say they are driving a "designer car," meaning it's an expensive, stylish vehicle made by a particular manufacturer. Similarly, "designer clothes" refers to clothing made by a well-known brand or designer that is associated with quality and style.