poor white

noun, Usually Disparaging and Offensive.
1.
a member of a class of white people, especially of the southern U.S., having low social status and little or no money, property, or education.
See also white trash.
Origin
1810-20, Americanism
British Dictionary definitions for poor white

poor White

noun
1.
(often offensive)
  1. a poverty-stricken and underprivileged White person, esp in the southern US and South Africa
  2. (as modifier): poor White trash