Definitions

1. 1. lit. the falling of one leaf heralds the coming of autumn (idiom)
2. 2. fig. a small sign can indicate a great trend
3. 3. a straw in the wind
4. 4. the first signs of autumn

Components

• 一 yī – one
• 叶 Yè – surname Ye
• 知 zhī – to know
• 秋 Qiū – surname Qiu