a deep sink for emptying slop pails and the like.
Origin of slop sink
First recorded in 1880–85
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for slop sink
Historical Examples of slop sink
Get over there in that corner and dig a slop-sink; you hear me?The Snow-Burner