'Yáng zhuāng' literally combines 'yáng' (meaning 'ocean' or, by extension, 'foreign' or 'Western') and 'zhuāng' (meaning 'clothing' or 'attire'). Together, it refers specifically to Western-style clothing—such as suits, dresses, or coats—that entered China through maritime trade and cultural exchange, especially from the late Qing Dynasty onward. Historically, it contrasted with traditional Chinese garments like the qipao or changshan.

Today, 'yáng zhuāng' is a neutral, formal term used in writing, fashion contexts, and historical discussions. It’s less common in casual speech—people often say 'xi fú' (Western clothes) or simply name the garment (e.g., 'xī zhuāng' for suit). While it can include everyday Western wear, it carries a subtle connotation of formality or cultural distinction, not just geographic origin.