A1[C]UK(USbathtub)a long plastic, metal, or ceramic container that is filled with water so that a person can sit or lie in it to wash their whole bodyBathroom fixtures and fittingsA1[Cusually singular]the activity of washing yourself or someone else in a bath: mainly UKSusannah has a long hot bath every evening.mainly USI took a bath this morning.bath oilPersonal hygiene and appearance - general wordsCleaning generallyrun a bathUK(USfill the tub)›to fill a bath with water for washing: I'll run you a bath while you take off those wet clothes.Movement of liquids›[C]USused to refer to a bathroom when describing a home: a four-bedroom two-bath houseRooms›[C]UKa health treatment: mud/thermal bathsDescribing medical treatment generally›[C]UKany container holding liquid: a bird bathContainers for liquids and gasesbaths[C, + sing/pl verb](pluralbaths)›UKold-fashioned→ swimming bathsSwimming›a public place where people went in the past to have a hot bathPublic buildings