风尘 literally means 'wind-blown dust'—a poetic compound where 风 (fēng) means 'wind' and 尘 (chén) means 'dust'. Together, they evoke the image of dust stirred up by wind, symbolizing transience, hardship, or the gritty reality of travel and daily life.

In modern usage, 风尘 carries a figurative sense: 'worldly bustle' or 'the hustle and bustle of secular life', often with connotations of weariness, exposure, or moral ambiguity—especially in classical or literary contexts. It appears in idioms like 风尘仆仆 (fēng chén pú pú), describing someone dusty and weary from long travel, and historically in phrases like 风尘女子, though this latter usage is now outdated and potentially offensive. Today, it’s mostly found in written or elevated speech, not casual conversation.