From Longman Dictionary of Contemporary Englishbobble hatˈbobble hat noun [countable] DCCa woollen hat with a bobble on the top
Examples from the Corpus
bobble hat• She's got this cute little duffle coat on and a bobble hat with her hair sticking out the bottom.• They put a temporary dressing on his cut nose and his wife puts a bobble hat on his head.• And no one, but no one is wearing a bobble hat.• Yes, Henry thought sourly, pushing a torch into his anorak pocket and looking round for his bobble hat.• You know the Dougie Rae thing, it's still bothering me, how exactly did he get the bobble hat concession?• You can't pull the bobble hat over my eyes. 