Learn how to say Nacelles correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word nacelle:
a streamlined casing on the outside of an aircraft or motor vehicle, especially one housing an aircraft engine:
a grey aircraft with NAVY painted on the engine nacelles
the passenger compartment of an airship.
early 20th century (originally denoting the car of an airship): from French, from late Latin navicella, diminutive of Latin navis ‘ship’