a.

1. 年長的，年紀較大的[（+to）]
   Bob is two years senior to me.

   鮑伯比我大兩歲。

2. 地位較高的；年資較深的[（+to）]
   He is a senior member of the committee.

   他是委員會中的資深委員。

3. 【美】四年級生的；【英】高年級生的
4. 高級的；前輩的
   His father was a senior officer at the bank.

   他父親是那家銀行的高級職員。

5. （置姓名後表示年長者，常大寫）老……，大……
   John Parker, Sr. is the father of John Parker, Jr.

   老約翰‧派克是小約翰‧派克的父親。

n.[C]

1. 較年長者
   Her boyfriend is her senior by six years.

   她的男朋友比她大六歲。

2. 前輩；上司；學長；資深人士
   He was my senior at Yale by two years.

   他是耶魯大學比我高兩級的學生。

3. 【美】（大學）四年級生；【英】（大學）高年級生
   The seniors defeated the juniors by 3-1.

   四年級學生以三比一戰勝了三年級學生。

4. 【英】（大學）評議員

adj.

1. for or denoting older people.
   ▸Brit. for or denoting schoolchildren above a certain age, typically eleven.
   ▸US of the final year at a university or high school.
2. [postpos.] denoting the elder of two with the same name in a family.
3. high or higher in rank or status.

n.

1. a person who is a specified number of years older than someone else:
   she was two years his senior.
2. a student in one of the higher forms of a senior school.
3. (in sport) a competitor of above a certain age or of the highest status.
4. an elderly person, especially an old-age pensioner.

[名]

1. 前輩；學長。