'Bāo sǔn' literally means 'to peel bamboo shoots' — a compound verb formed from 剥 (bāo, 'to peel, to shell') and 笋 (sǔn, 'bamboo shoot'). It refers specifically to the culinary preparation step of removing the tough, fibrous outer layers of fresh or dried bamboo shoots before cooking. This action is essential in Chinese home cooking and restaurant kitchens, especially when preparing dishes like stir-fried bamboo shoots, braised pork with bamboo shoots, or soups.

Though the phrase is literal and concrete, it’s rarely used metaphorically in everyday speech (unlike English expressions such as 'peeling an onion'). The term carries a domestic, hands-on connotation — evoking images of kitchen work, seasonal food preparation (spring being peak bamboo shoot season), and traditional food processing techniques. It’s a common verb in recipe instructions, market conversations, and family cooking contexts, often appearing in imperative or progressive forms (e.g., 正在剥笋, 'peeling bamboo shoots right now').