Plain English Meaning
Specific spots on the taxiway where you stop and wait until you are told you can keep moving. They are marked with yellow lines on the ground and a red sign with white letters on the side.
Full Definition
Marked points on a taxiway where an aircraft must stop and hold until cleared to proceed, typically located short of a runway, an intersecting taxiway, or another protected area. They are identified by painted yellow holding position markings on the pavement and corresponding red-and-white holding position signs beside the taxiway.
Context Anchor
Seen while taxiing, especially near runway entrances, runway crossings, and other protected areas on the airport surface.
Why Pilots Care
Prevents runway incursions and keeps safe and orderly.