1.nounThe route and aircraft used to deliver material by an airlift.
2.noun(integrated circuits) A conductor on an integrated circuit that crosses over other conductors with an air gap introduced between in the wafer manufacturing process.
"The Schottky contact is connected to the anode pad using a Gold airbridge."
3.nounAn elevated corridor connecting an airport to a plane, usually enclosed and used for disembarking and embarking passengers and crew.