Plain English Meaning
Another aircraft that is heading in toward the airport or point you are at or near.
Full Definition
An aircraft that is flying toward an airport, fix, or specified location, typically arriving to land or transit through a defined area.
Context Anchor
You may see or hear this term in airport traffic discussions, radio calls, and safety guidance about watching for aircraft approaching the airport.
Derivation
"Inbound" combines "in" (toward) with "bound" (heading or going). The word "bound" in this sense comes from an old Norse word meaning "prepared to go." So inbound traffic literally means aircraft heading toward a place.
Why Pilots Care
Identifying inbound traffic is essential for maintaining separation and avoiding mid-air collisions, especially when entering, departing, or crossing an active traffic pattern.