corker
From Longman Dictionary of Contemporary Englishcorkercork‧er /ˈkɔːkə $ ˈkɔːrkər/ noun [countable] British English old-fashioned GOOD/EXCELLENTsomeone or something you think is very good —corking adjectiveExamples from the Corpuscorker• For Clough, too, that was the season's first goal, and a corker.• There is a corker gathering steam not far from my cottage over the siting of a compost heap.• Crikey, what a corker, thought Jimmy.• McCain's was an absolute corker.