lesson
英 ['les(ə)n]
美['lɛsn]
	    - n. 教训;课
 - vt. 教训;上课
 
英英释意
- 1. a unit of instruction;
 - "he took driving lessons"
 
- 2. punishment intended as a warning to others;
 - "they decided to make an example of him"
 
- 3. the significance of a story or event;
 - "the moral of the story is to love thy neighbor"
 
- 4. a task assigned for individual study;
 - "he did the lesson for today"