noun
: a bearing that does not require oil ; especially : one in which a lubricant (as powdered graphite) is incorporated in the material of which the bearing is made
noun
: a bearing that does not require oil ; especially : one in which a lubricant (as powdered graphite) is incorporated in the material of which the bearing is made
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012