noun · the dried aerial parts of the Eupatorium fortunei plant used in traditional Chinese medicine to resolve dampness and clear summer heat

中医常用佩兰来调理脾胃湿滞。

proper name · the fragrant plant Eupatorium fortunei, also known as fragrant thoroughwort, historically referred to as orchid in ancient Chinese literature

古人常佩戴佩兰以求身体芳香。