slop-basin

Noun

 * 1)  A container used for urinating or defecating when it is impossible or inconvenient to go to a bathroom or toilet; a bedpan, a chamber pot. Commonly used in hospitals, where it is normally called bedpan. Formerly used in private residences, particularly those without an indoor toilet or bathroom.
 * 2)  A bowl for receiving the leavings of tea or coffee cups at table

Synonyms

 * bedpan
 * slop-jar
 * slop-bowl
 * slop-pail
 * chamber pot
 * loo