Hot, brewed in red mug, wonderful thing

• Fine example of smell associated with campanologist?
• Head of Mafia caught by hired gun, surprisingly — wow!
• Someone of remarkable excellence
• Absolute belter
• Peach smell Danish lady doctor bottles

Wiktionary Word definitions in Wiktionary
n. Something that is particularly outstanding, unusual, or exceptional.

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
1905, American English, originally used of beautiful women; probably from dinger , early 19c. slang word for anything superlative; also see hummer .

WordNet Word definitions in WordNet
n. someone of remarkable excellence; "a humdinger of a secretary"

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
noun EXAMPLES FROM OTHER ENTRIES ▪ a humdinger of a party EXAMPLES FROM CORPUS ▪ And it was a humdinger , delivered with passion and poise. ▪ Brown must have been a humdinger of a playground supervisor. ▪ Pierre and Donna are having a humdinger of a row. ...