1. This is a senior of the profession. ����һλͬ���е���ǰ����
2. He had now become the fourth most senior member in the Senate. ���ڵ�ʱ��Ϊ�˲���Ժ�ڵ���λ���������Ա��
3. In the United States, traditionally the college senior class give a ball each spring. ����ͳ��������ѧ���꼶ѧ��ÿ�괺���ٰ�һ�δ�����ᡣ
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n.
1. an undergraduate student during the year preceding graduation
2. a person who is older than you are adj.
1. older; higher in rank; longer in length of tenure or service
2. used of the fourth and final year in United States high school or college
3. advanced in years; (`aged' is pronounced as two syllables)