D defs.my
Entry 1 sense Webster, 1913

Whapper

· Whap·per · IPA
01 n. Something uncommonly large of the kind; something astonishing; -- applied especially to a bold lie. Now (1998) usually spelled whopper.
  1. 1.
    Something uncommonly large of the kind; something astonishing; -- applied especially to a bold lie. Now (1998) usually spelled whopper.[Colloq.]