Science Fair Project Encyclopedia
A tumbler is also a type of drinkware, a small glass cup, often found in bars and pubs, used to hold alcoholic beverages. So-called because originally it had a pointed or convex base, and could not be set down with any liquor in it, thus compelling the drinker to finish his measure.
See also: shot glass
A tumbler is a toy that can tumble over and then straighten up itself. It usually has a rounded base with a heavy weight at the lowermost part of it.
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