retainer

1. Any thing or person that retains.

2. A dependent or follower of someone of rank.

   Dienstmann, Gefolgsmann, Vasall

3. A paid servant, especially one who has been employed for many years.

   Bediensteter

   слуга́slugá

4. A fee one pays to reserve the other's time for services.

   This lawyer charges a retainer for his work.

   предвари́тельный гонора́рpredvarítelʹnyj gonorár

   a fee charged in advance to retain the services of someone

5. A device that holds teeth in position after orthodontic treatment.

   Retainer, Zahnspange

   a dental appliance that holds teeth (or a prosthesis) in position after orthodontic treatment

6. A retaining valve.

1. Since the operation, he's been wearing a neon pink retainer.

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2. They met at the estate of the shogun's retainer to play a game of cards.

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3. The Georgia Tech team also is trying to place the magnetic sensors into a dental retainer, getting rid of the headset.

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