slasktratt

Noun

 * 1) a sink intended as the main sink for discharging wastewater, often with a large perforated outlet (in a double bowl kitchen sink)
 * 2) a more or less funnel-shaped bowl connected to a drain, for discharging wastewater
 * 3)  a place where (undesirable) things are dumped, a dumping ground
 * 1)  a place where (undesirable) things are dumped, a dumping ground

Usage notes
The other basin is the.