The term 'HAPPY-HOUR TRAYFUL' can be broken down into two words: 'happy-hour' and 'trayful'. The crossword solution for 'happy-hour' is 'ALES', which is a type of alcoholic beverage. A 'trayful' is a large quantity of something, so in this case it would refer to a large quantity of ALES. Therefore, the term 'HAPPY-HOUR TRAYFUL' refers to a large quantity of alcoholic beverages, typically served during a happy hour event.