Bier is a German noun meaning beer. In English-language contexts it may appear as a loanword in discussions of German culture or in names of brands. It is pronounced with a long /iː/ quality and ends with a clear /r/ in many accents; in some varieties the /r/ is less pronounced or vocalized. The term is masculine (der Bier) in German, though in casual use you’ll often see it without decline in international contexts.
Full pronunciation guide