Lisu /ˈliːˌsuː/adjective 1noun 1forms 1 adjective1 •Of, from, or pertaining to the Lisu people or Lisu language. noun1 •A member of a Tibeto-Burman ethnic group inhabiting the mountainous regions of Yunnan (southwestern China), Arunachal Pradesh (northeastern India), northern Myanmar and Thailand. formsLisus