- the top of a box; the upper portion of a boxed product, which may contain the expiration date, product identification, proof of purchase, or special voucher.
Origin of box top
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
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Historical Examples of box-top
Word Origin and History for box-top
Online Etymology Dictionary, © 2010 Douglas Harper