meal ticket

meal ticket idiom
A person or thing depended on as a source of income, as in Magic Johnson was a real meal ticket for his team, or Her interpersonal skills will be her meal ticket when she goes into sales. This metaphoric expression alludes to the earlier practice of handing out tickets that entitle their holder to a meal. [Early 1900s]

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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