婬 [yín]  
1. Same as "淫".  
2. Licentious; lascivious.  
引 (Reference):  
1. From "Shuō Wén": 婬 refers to private indulgence.  
2. From "Wǔ Jīng Wén Zì Juǎn Xià": The character 婬, referring to licentiousness, is often replaced by 淫 in classical texts. Zhu Junsheng says, "In a broader sense according to the Lesser Dictionary: 'Upper licentiousness is called 婬, lower licentiousness is called 报, and lateral licentiousness is called 通.' All classical texts use 淫 for this."  
3. From "Kǒngzǐ Jiā Yǔ": Cheng Linggong displayed licentiousness in court, causing him to be admonished for misgovernance, leading the ruler to kill him.  
例 (Examples):  
- 婬乱 (licentiousness and disorder)  
- 婬慝 (evil and immoral)  
- 婬欲 (sexual desire)  
- 婬秽 (fornication and wrongdoing)