undercarriage
un.der.car.riage \'*n-d*r-.kar-ij\ n 1: a supporting framework (as of an automobile) 2: the landing gear of an airplane
Webster's English Dictionaryun.der.car.riage \'*n-d*r-.kar-ij\ n 1: a supporting framework (as of an automobile) 2: the landing gear of an airplane