Answer: monocoque

AnswerCrossword Clue
monocoquetype of vehicle construction (as of an automobile) in which the body is integral with the chassis
monocoque(French) an aircraft structure in which the outer skin carries all or most of the torsional and bending stresses; a car structure in which the body is integral with and shares the stresses with the chassis
monocoquea type of construction (as of a fuselage) in which the outer skin carries all or a major part of the stresses