mule driver vs skinner

mule driver

skinner

noun
  • An instance of skinning the lamb, i.e. a bookmaker winning all of his bets where nobody backed the winner. 

  • One who deals in skins, pelts, or hides. 

  • A hunting knife used for skinning animals. 

  • Someone who skins animals. 

  • A sex offender. 

How often have the words mule driver and skinner occurred in a corpus of books? (source: Google Ngram Viewer )