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show-and-tellor show and tell (shō′ən-tĕl′)
1. An educational activity in which a child displays an object to the class and talks about it.
2. A public presentation or display.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.