Hmong UK /h(ə)ˈmɒŋ/US /ˈmɔŋ/adjective 1noun 1 adjective1 •Of or relating to the Hmong, their culture, or their lect. noun[plural only]1 •A people who live predominantly in the mountainous regions of China, Vietnam, Laos, and Thailand, and (in diaspora) around the world.