n.[U]

1. （学生的）家庭作业
   I'll watch TV after I finish my homework.

   我做完家庭作业去看电视。

2. 家里做的工作；副业
3. （会议、讨论等前的）准备工作
   Obviously the negotiator had done his homework.

   显而易见，谈判人事前做了充分的准备工作。

n.

1. school work that a pupil is required to do at home.
2. preparation.
3. paid work done in one's own home, especially piecework.