retainer

باللغة العربية: أتعاب مقدمة، مقوام أسنان، خادم

1. Any thing or person that retains.
2. A dependent or follower of someone of rank.
3. A paid servant, especially one who has been employed for many years.
4. A fee one pays to reserve the other's time for services. · This lawyer charges a retainer for his work.
5. A device that holds teeth in position after orthodontic treatment.
6. A retaining valve.

الجمع retainers