- A small, portable device onto which the contents of a book in electronic format can be downloaded and read. (noun)
- A book whose contents are in an electronic format. (noun)
- A book in electronic form (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.
- To book (hospital appointments, airline tickets, etc) through the internet (verb)
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