slum
noun
[ slʌm ]
• a squalid and overcrowded urban street or district inhabited by very poor people.
• "inner-city slums"
slum
verb
• spend time at a lower social level than one's own through curiosity or for charitable purposes.
• "he bought some second-hand clothes, and slummed among the metropolis's underprivileged"
Origin:
early 19th century (originally slang, in the sense ‘room’): of unknown origin.