避暑 literally means 'to avoid summer heat' — 避 (bì) means 'to avoid, to escape', and 暑 (shǔ) means 'summer heat' or 'scorching weather'. Together, they form a compound verb describing the act of seeking cooler places or conditions during hot summer months. This term carries a cultural connotation of seasonal retreat, often associated with traveling to mountain resorts, lakeside villages, or northern regions where temperatures are milder.

Historically, Chinese emperors and elites built summer palaces (e.g., the Chengde Mountain Resort) specifically for 避暑. Today, it’s commonly used in travel contexts — people 避暑 by visiting high-altitude towns like Kunming or coastal cities like Qingdao. While it can be used as a noun ('a summer retreat'), its primary grammatical function is verbal, typically appearing after subject pronouns or nouns and followed by locations or methods (e.g., 去北戴河避暑).