(US,dated) A container used for urinating or defecating when it is not possible or convenient to use a bathroom or toilet; a bedpan, a chamber pot. Commonly used in hospitals, where it is normally called bedpan. Formerly used in private residences that were without an indoor toilet or bathroom.
"The stage ought to be here," said Miranda, glancing nervously at the tall clock for the twentieth time. "I guess everything's done. I've tacked up two thick towels back of her washstand and put a mat under her slop-jar; but children are awful hard on furniture. I expect we sha'n't know this house a year from now."
