noun.
The practice of visiting slums, often for mere curiosity or as an amusement.
noun.
The washing of earthy matter, pulverized rock, etc., to separate a desired element, as fossil remains or grains of ore.
the GNU version of the Collaborative International Dictionary of English
verb.
Visiting slums. Sometimes used humorously, in reference to the appearance of a dignified person in a situation generally thought of as low-class.