 Dem re - christened di group name to Ladysmith Black Mambazo - Ladysmith represent dia hometown , Black refer to di black oxen wey be di strongest for di farm , and Mambazo na Zulu word for axe , wey symbolize di group ability to cut down competition .  O O O B-ORG I-ORG I-ORG O B-LOC O O O 