Bed·lam Pronunciation: 'bed-l&m Function: noun Etymology: Bedlam, popular name for the Hospital of Saint Mary of Bethlehem, London, an insane asylum, from Middle English Bedlem Bethlehem 1 obsolete : MADMAN, LUNATIC 2 often capitalized : a lunatic asylum 3 : a place, scene, or state of uproar and confusion - bedlam adjective