1 [C] an amount of money that you owe to sb 债；欠款；债务: She borrowed a lot of money and she's still paying off the debt. 她借了很多钱，到现在还没有还清所有欠款。

2 [U] the state of owing money 负债: After he lost his job, he got into debt. 他失业以后便开始负债。

3 [C] [usu.sing] (formal 正式) something that you owe sb, for example because he/she has helped or been kind to you 人情债；恩惠: In his speech he acknowledged his debt to his family and friends for their support. 在演说中，他对家人和朋友们给予他的支持表示深切谢意。