noun · Meimuna opalifera, a kind of cicada found in East Asia, typically appearing in late autumn.

寒蝉在秋风中发出的鸣声略显凄凉。

A metaphor for someone who remains silent or keeps their thoughts to themselves, especially out of fear or caution.

面对老师的严厉批评，全班同学都噤若寒蝉。