Landing Gear

apparatus used by a vehicle for landing and traveling on land or water (i.e. the wheels on an airplane)

In aviation, the undercarriage or landing gear is the structure (usually wheels) that supports an aircraft and allows it to move across the surface of the Earth when it is not flying.
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Noun
1. an undercarriage that supports the weight of the plane when it is on the ground
(hypernym) undercarriage
(hyponym) landing skids
(part-holonym) airplane, aeroplane, plane
(part-meronym) nosewheel

Device that supports the front end of semitrailer when not attached to a tractor. (ATA1)

landing gear /'lændiɳgiə/
danh từ (hàng không) bộ phận hạ cánh (bánh xe, phao...)
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