Whopper
WordNet
noun
(1) Something especially big or impressive of its kind
(2) A gross untruth; a blatant lie
WiktionaryText
Noun
- something remarkably large
- Professor Marvel, talking to his horse, in The Wizard of Oz: "There's a storm blowing up, Sylvester -- a 'whopper', speaking in the vernacular of the peasantry."
- an outrageous lie