General:
* Airport: A place where airplanes land and take off.
* Seaport: A town or city with a harbor for ships.
* Viewport: A window in a computer display.
* Waterport: A port for watercraft.
* Skyport: A spaceport or airport for spacecraft.
* Safeport: A safe harbor or haven.
More specific:
* Gateport: A gate that leads to a port.
* Backport: To transfer code from a newer version of a software product to an older one.
* Outport: A port that is not a major port.
* Inport: To bring goods into a port.
* Export: To send goods out of a country.
* Import: To bring goods into a country.
Figurative:
* Heartport: A place where you feel safe and loved.
* Mindport: A place where you can access your thoughts and feelings.
These are just a few examples, and there are many other compound words ending in "port."