A tumbler is a short drinking glass with a flat, thick base and straight or slightly tapering sides — no stem, no handle. The name is said to come from early glasses with rounded bottoms that tumbled if set down, though modern tumblers stand firmly. The classic old-fashioned or rocks tumbler holds whisky, cocktails, and spirits over ice; taller highball tumblers serve long drinks. The heavy base feels substantial in the hand and withstands ice and muddling. In catering, tumblers are the workhorse glassware: cheap, stackable, dishwasher-proof, and versatile enough for water, juice, and soft drinks. Their simplicity is their virtue — they suit almost any casual drink.