The definition of carry-on is luggage that can be taken onto a plane.(adjective)
An example of carry-on used as an adjective is in the phrase "carry-on bag."
A carry-on is a small piece of luggage brought onto a plane with a person.(noun)
An example of a carry-on is an overnight bag.
See carry-on in Webster's New World College Dictionary
See carry-on in American Heritage Dictionary 4
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