The house has three bedrooms and one and a half 'baths'. [=one full bathroom and one bathroom with only a sink and a toilet]
Would you like me to 'draw/run a bath' for you? [=to fill the bathtub with water for you?]
a 'full bath' [=a bathroom with a sink, toilet, and a bathtub or shower]
(..) . MOTHER: ? MOTHER: Oh, my God! Run a bath, call the doctor. Get her into the bath. Dr. Carter, -... He won't be there. What is a thermometer? Mercury. (..)1998 City of Angels