bapabear wrote:
The noun lunker has two meanings: something large and unruly, and a large game fish, especially a bass. It was originally an Americanism, and its etymology is obscure: lunk, lunkhead, and clunker have all been suggested. Lunker entered English in the second half of the 19th century.
When I was a kid I heard lunkhead often.
It had nothing to do with size then.