barley water
noun [ U ] uk/ˌbɑː.li ˈwɔː.tər/ us/ˌbɑːr.li ˈwɑː.t̬ɚ/
UK大麦茶
a drink made from barley and fruit juice
US old-fashioned（使病人病情好转的）大麦汤
a drink made from barley and water boiled together and given to someone who is sick to make them feel better