a large jar or pail for collecting household slop for disposal.
Words nearby slop jar
Origin of slop jar
First recorded in 1850–55
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
Examples from the Web for slop jar
Then I dropped the vinaigrette in the slop-jar and jumped down from the wash-stand.The Story of Dago|Annie Fellows-Johnston