Definitions

1. noun

a person or thing that retains or holds something in place, or a person who pays money to have a lawyer represent them

“The dentist used a retainer to keep the patient’s teeth in place after the orthodontic treatment.”

2. noun

a person who is employed to protect or defend something, especially a property or a person

“The retainer was hired to provide security for the celebrity at the event.”

3. noun

a person who receives and holds something, especially money, in trust for another

“The company hired a retainer to manage its finances and investments.”