A separate streamlined enclosure on an aircraft for sheltering the crew or cargo or housing an engine. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "nacelle" in a sentence
"The turbine's generator housing, called a nacelle, is pulled up the mountain."
"At 62 tons, the nacelle is the "brains" of the turbine's operation and includes its gear box."
"A nacelle is a streamlined enclosure that houses crew or cargo, or houses engines."