Definition
A specific point or window along a flight path, instrument approach, or procedure at which an aircraft is expected to meet defined parameters such as altitude, airspeed, configuration, or position. Reaching the gate within those parameters is the criterion for continuing the procedure; failing to meet them is a cue to correct, go around, or revise the plan.
Plain English
A checkpoint along the way where the aircraft must be in the right place, at the right height, and at the right speed. If it isn't, the pilot fixes it or tries again.
Context Anchor
Pilots encounter this term in airline, airport, and ground-control operations, especially when receiving taxi instructions to or from the terminal.
Derivation
From the everyday meaning of a gate as a fixed point you must pass through. In aviation it keeps that idea: a defined point you must arrive at correctly, not just fly past.
Why Pilots Care
Gates are the structure behind a stabilized, predictable approach. Missing a gate is an early warning that the approach is going wrong, and recognizing that early is what prevents unstable approaches and runway excursions.
Intuition Check
Do not think of a gate only as a swinging fence or door. In airport use, a gate is the assigned aircraft parking and boarding location at the terminal.
Example Sentence 1
By the 1,000-foot gate the aircraft must be fully configured, on speed, and on the glidepath, or the crew will go around.
Example Sentence 2
After landing, the crew taxied the aircraft to the gate for deplaning and refueling.