Los Hermanos Ábalos have a song El mistolero, see/listen e.g. here:
I cannot find the meaning of "el mistolero" neither in the RAE dictionary, nor in SpanishDict, nor anywhere else. Even my native Spanish friends from Madrid and Chile have never heard such a word. (Well, the Spanish friend from Madrid said something like "there must be a typo, there should be el pistolero!" :) )
What does "el mistolero" mean? Is it somehow related to the fruit mistol, like "a person picking mistol for living"? Is it just some Argentinian slang not understood anywhere else in the Spanish-speaking word?