from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Slang One that is extraordinary or remarkable: a humdinger of a blizzard.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Something that is particularly outstanding, unusual, or exceptional.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. someone of remarkable excellence
Origin unknown.(American Heritage® Dictionary of the English Language, Fourth Edition)
Of obscure origin. (Wiktionary)