cesspool

/ˈses-ˌpül/

perhaps by folk etymology from Middle English suspiral vent, tap on a main pipe, settling pool, from Anglo-French suspirale vent, from suspirer to sigh, exhale, from Latin suspirare, literally, to draw a long breath

noun

  1. an underground reservoir for liquid waste (such as household sewage)

  2. a filthy, evil, or corrupt place or state