To assist a patient with using the toilet and general personal hygiene.
A room containing a shower and/or bathtub, and (typically but not necessarily) a toilet.
A lavatory: a room containing a toilet and (typically but not necessarily) a bathtub.
A pair of jacks.
Heroin tablets (from "jacks and jills" = pills)
A children's game involving picking up objects; knucklebones; jackstones.