the interval before the evening meal during which cocktails and other alcoholic beverages are often served.
Origin of cocktail hour
First recorded in 1925–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for cocktail hour
Historical Examples of cocktail hour
They found a table at the rear of the room, out of the worst of the cocktail-hour uproar.Little Fuzzy
Henry Beam Piper