Definition of hamfatter in English:

hamfatter

(also hamfat)

Pronunciation /ˈhamˌfadər/ /ˈhæmˌfædər/

noun

informal
  • An inexpert or amateurish performer, especially a mediocre jazz musician.

    • ‘recordings loaded with that “hamfat” band sound’
    • ‘There were not a lot of jazz guitarists teaching in Richmond Hill, so at first I wasted some time studying with a local hamfat who tried to teach me stuff.’
    • ‘These amateurs were called hamfatters and, later, hams.’

Origin

Late 19th century perhaps an alteration of amateur.