ShillukPronunciation: /ʃɪˈluːk/Definition of Shilluk noun (plural same or Shilluks) 1a member of a Sudanese people living mainly on the west bank of the Nile. 2 [mass noun] the Nilotic language of the Shilluk. adjective relating to the Shilluk or their language. Origin:the name in ShillukShilluk in other Oxford dictionaries Definition of Shilluk in the US English dictionary