Translation

• hard lump in the abdomen (in Chinese medicine)
• crux of an issue
• main point in an argument
• sticking point
• deadlock in negotiations

Synonyms

• 先天不足, 弱点, 弱项, 欠缺, 毛病, 瑕, 瑕玷, 瑕疵, 疵, 疵点, 疵瑕, 短, 短处, 缺欠, 缺点, 缺陷, 老毛病, 败笔, 通病
• 主焦点, 关子, 关节, 关键, 典型, 刀口, 枢机, 枢纽, 点子, 热点, 焦点, 纲, 纽带, 节骨眼, 要害, 要点, 问题