wū tóu

1. The head of a blackbird.

2. A head with black hair. Borrow refers to youth.

3. The alias of corydalis or aconite. The rhizome is massive and toxic, and can be used as an analgesic.

4. In ancient times, it refers to the outer segment of hind feet of animals such as cattle and horses.

5. Common name of Euryale ferox, also called the head of a chicken.