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1. A portable table consisting of a tray mounted on folding legs.
2. A tray mounted on or in a piece of furniture, such as an airplane seatback, designed to fold or swing out of the way for storage.
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.