n.[C]

1. 保留者；保持者
2. 【機】護圈；定位器
3. 家臣，侍從；僕人；僱員
   Her arrival had just been announced by the faithful retainer.

   她的忠僕已剛宣布了她的到來。

n.[U]

1. 【律】（對財產的）保留；保留授權
2. （律師等的）僱，聘；聘用定金
   a one-hundred-dollar retainer agreement

   一個一百元的聘用定金協議

n.

1. a thing that holds something in place.
2. a fee paid in advance to a barrister, in order to secure their services.
3. Brit. a reduced rent paid to retain accommodation during a period of non-occupancy.
4. a servant who has worked for a person or family for a long time.