Loved this unusual word when I read it in a short story by C.B. Wentworth. This sent me on a dictionary quest to discover its meaning. I could have googled its definition, however, I enjoy the feel of a book in my hands and I have six different English dictionaries at home. Only one had the definition, the 1988 New Lexicon Webster’s Dictionary of the English Language, although the word was actually spelled as two. Cods wallop, defined as foolish nonsense, is British slang.
I made the Dictionary Reference notebook for easy access to the interesting Supplements to each book: Sobriquets of Cities, Mythological and Classical Names, Musical Terms, Gazetteer, Flags of the World, etc. etc.