A grand finale is the spectacular closing item of a show. The grand finale, save it for the grand finale, a grand finale of fireworks.
It is built to send everybody out talking, which is why fireworks displays load half the budget into the last minute. A concert may simply end, but a grand finale is designed to be remembered.
1noungrand finaleThe spectacular closing item of a show.
“The festival ended with a grand finale of fireworks over the lake.”
grand finale is an ending.
Grand plus finale, from Italian finale, the closing part of a work.
From grand plus finale.
Etymology from Wiktionary, CC BY-SA
Practised in Circus & Fairground