|1.||history a supporter or dependant of a person of rank, esp a soldier|
|2.||a servant, esp one who has been with a family for a long time|
|3.||a clip, frame, or similar device that prevents a part of a machine, engine, etc, from moving|
|4.||a dental appliance for holding a loose tooth or prosthetic device in position|
|5.||a fee paid in advance to secure first option on the services of a barrister, jockey, etc|
|6.||a reduced rent paid for a flat, room, etc, during absence to reserve it for future use|
retainer re·tain·er (rĭ-tā'nər)
One that retains, as a device, frame, or groove that restrains or guides, especially for a prosthesis.
An appliance used to hold teeth in position after orthodontic treatment.