Connector: In fall protection, a device that is used to couple (connect) parts of the personal fall arrest system and positioning device systems together. It may be an independent component of the system, such as a carabiner, or it may be an integral component of part of the system, such as a buckle or D-ring sewn into a body belt or body harness, or a snap-hook spliced or sewn to a lanyard or self-retracting lanyard. SOURCE: OSHA

These are connection points on a body harness used in fall protection.

Body Belt with connector
Body Belt Fall Arrest System with a connector