SLUM

Slum (?), n. [[CF. Slump, n.]] 1. 1. A foul back street of a city, especially one filled with a poor, dirty, degraded, and often vicious population; any low neighborhood or dark retreat; — usually in the plural; as, Westminster slums are haunts for theives. Dickens.
2. 2. pl. (Mining) Same as Slimes.