a 1 a make (beer etc.) by infusion, boiling, and fermentation. b make (tea etc.) by infusion. 2 undergo these processes. 3 gather force; threaten (storm is brewing). 4 concoct (a plan etc.). n. 1 liquid or amount brewed; concoction. 2 process of brewing. brew up make tea. o brewer n. [Old English]
