Collins Concise English Dictionary © HarperCollins Publishers::

hillbilly /ˈhɪlˌbɪlɪ/ n ( pl -lies)
  1. usually derogatory an unsophisticated person, esp from the mountainous areas in the southeastern US
  2. another name for country and western
Etymology: 20th Century: from hill + Billy (the nickname)

'hillbilly' also found in these entries:
In the English description:

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