The Vietnamese word "gù lưng" is an adjective that describes someone or something that is hunch-backed or hump-backed. It is often used to refer to a person whose back is curved or bent in a way that is not straight, typically due to a medical condition or injury.
In more complex discussions, "gù lưng" can be used metaphorically to describe someone who carries a heavy burden, whether physically or emotionally. For example, you could say, "Cô ấy gù lưng vì lo lắng quá nhiều cho gia đình." (She is hunch-backed because she worries too much about her family.)
While "gù lưng" primarily refers to a physical condition, it can also imply a sense of weakness or vulnerability, especially in a metaphorical sense.