nub

中文： 小块、核心、要点

1. A small knob or lump.
2. The essence or core of an issue, argument etc. · What do you think is the nub of the problem?
3. The clitoris. (slang)
4. A pointing stick. (colloquial)
5. A passage of Shakespearean blank verse.
6. The genital tubercle. (informal) · nub theory

复数 nubs