variants:
or less commonly go cup
plural go-cups also go cups
Definition of go-cup
US
: a plastic or paper cup used especially for taking a beverage off the premises of a bar, restaurant, etc.
It was full of noise and talk and men and women in uniform. They had go-cups of coffee, they were making notes, they were reading bulletins, they were getting ready to head out.— Lee Child
especially
: such a cup used (as in New Orleans) for carrying an alcoholic beverage
Nagin joked about seeing some librarians with go-cups in the French quarter … — James Varney Another night spot is Bourbon Street. Visit on a weekday when it's calmer, or brave it on Friday night when it's in full-on party mode, filled with revellers touting "go cups"—plastic containers which allow drinks purchased in bars to be consumed on the street. — Tamara Hinson
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Merriam-Webster unabridged
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Time Traveler for go-cup
The first known use of go-cup was in 1973
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