Definition
An area of land or water used or intended to be used for the landing and takeoff of aircraft, including its buildings and facilities, if any.
Plain English
A place set up for aircraft to land and take off. It can be on land or water, and may include hangars, terminals, fuel, and other support buildings — or none of those at all.
Context Anchor
Pilots see this term on charts, in flight planning, in airport information, and in radio or written instructions about where aircraft operate.
Derivation
From 'air' plus 'port,' borrowed from the older idea of a seaport — a designated place where ships arrive and depart. An airport is the same idea for aircraft: a recognized place for arrivals and departures.
Why Pilots Care
The legal definition is broader than most people assume. A grass strip, a remote gravel patch, or a stretch of water used for seaplane operations can all qualify as airports. This affects where you can legally land, what rules apply, and how the facility is depicted on charts.
Analogy
An airport is to aircraft what a harbor is to boats: the organized place where they arrive, depart, and receive support.
Intuition Check
Do not think of an airport as only the runway. In aviation use, the word can include the whole landing area plus related buildings and facilities.
Example Sentence 1
The pilot checked the airport's published information before departure to confirm runway length and available services.
Example Sentence 2
The tower cleared us to taxi to the active runway via the airport's main taxiway.