IgboPronunciation: /ˈiːbəʊ/ (also Ibo)Definition of Igbo noun (plural same or Igbos) 1a member of a people of SE Nigeria. 2 [mass noun] the language of the Igbo, belonging to the Kwa group and having some 12 million speakers. adjective relating to the Igbo or their language. Origin:a local nameIgbo in other Oxford dictionaries Definition of Igbo in the US English dictionary