Definition of "rockabilly" [rockabilly]

• A form of popular music combining features of rock 'n' roll and bluegrass. (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 term rockabilly is a portmanteau rock from rock 'n' roll and hillbilly, the latter a reference to the country music often called hillbilly music in the 1940s and 1950s that contributed strongly to the style's development."
• "The term rockabilly is a portmanteau of rock and hillbilly."
• "I forgot to mention in my show that rockabilly is also in the show."