Plain English Meaning
A short way of writing 'Approach' — the part of the flight where you fly a published procedure to line up with and descend toward the runway.
Full Definition
A shorthand notation for 'Approach,' used on charts, flight plans, and instrument procedure documents to refer to the segment of an IFR flight in which the aircraft transitions from the en route or arrival phase down toward the runway, following a published instrument approach procedure.
Context Anchor
Seen in IFR handbook figures, instrument procedures, avionics labels, and short written notes where there is space.