landing gear
noun
Definitions
The wheels, tyres, brakes, shock absorbers etc of an aircraft; its undercarriage.
Example: Modern landing gear usually has a tricycle configuration.
Any of the assemblies which support an aircraft when it is on the ground.
Example: Large modern commercial aircraft have a nose landing gear and two main landing gears.
(trucking) the bipod stand found near the front end underneath a truck trailer, used to keep the trailer level when not attached to a tractor truck.