washbasin
A fixture used for urination and defecation, particularly one with a large bowl and ring-shaped seat which uses water to flush the waste material into a septic tank or sewer system.
A very shabby or dirty place.
A room or enclosed area containing a fixture used for urination and defecation (i.e. a toilet (sense 2)): a bathroom or water closet.
A small secondary lavatory having a fixture used for urination and defecation (i.e. a toilet (sense 2)) and sink but no bathtub or shower.
To use the toilet.
To assist another (a child, etc.) in using the toilet.