From Longman Dictionary of Contemporary Englishtoppertop‧per /ˈtɒpə $ ˈtɑːpər/ noun [countable] informalDCC a top hat
Examples from the Corpus
topper• Wedding first, Pertwee's wedding, and Hatton all got up in a topper with his tarty wife.• A chart topper all the way to Christmas and back.• Just the thing to stop you from dropping down dead after strutting your stuff to the latest chart topper!• The final topper was the racetrack.• I held on excitedly to my grey topper and we all climbed in.• Sailing Experience the thrill of topper sailing at Craigavon Watersports Centre.• They want to abolish the grand old tradition completely and scrap the topper.• The topper is, they hired temps to do my day job. 