Definition of "portmanteau" [port•man•teau]

• A large leather suitcase that opens into two hinged compartments. (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.

• "The great champion of New York starchitecture happens to not like the term, which he calls a portmanteau for the “churlish.”"
• "Nobody speaks in portmanteau sentences, so they are inherently pretentious and tend to sound pompous."
• "My portmanteau is cantilivered and needs bracing..."