a servant or attendant who has served a family for many years.
Also called cage, separator. Machinery. a ring separating, and moving with, balls or rollers in a bearing.
Orthodontics. a fixed or removable device worn in the mouth to hold the teeth in their new position during the adaptive period after straightening appliances have been removed. Prosthodontics. a part on a bridge or the like by which the bridge is attached to the natural teeth.