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Meaning of carry-on

car•ry-on

Pronunciation: (kar'ē-on", -ôn"), [key]
—adj.
  1. of a size and shape suitable for being carried onto and stowed in the passenger compartment of an airplane: carry-on luggage.
—n.
  1. a piece of carry-on luggage.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.