MORTON Meaning of MORTON in English Mor ‧ ton, Jelly Roll /ˈmɔːtn $ ˈmɔːr-/ BrE AmE (1885–1941) a US ↑ jazz piano player and band leader, who helped to develop ↑ New Orleans jazz Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012