Noun
a cemetery for unknown or indigent people
Source: WordNetHardly a book of human worth, be it heaven's own secret, is honestly placed before the reader it is either shunned, given a Periclean funeral oration in a hundred and fifty words, or interred in the potter's field of the newspapers' back pages. Edward Dahlberg
An interviewee in the documentary The Search for Robert Johnson (1991) suggests that owing to poverty and lack of transportation Johnson is most likely to have been buried in a pauper's grave (or " potter's field ") very near where he died. Source: Internet
The future site of Washington Square was a potter's field from 1797 to 1823 when 10 to 20,000 of New York's poor were buried here, and still remain. Source: Internet