Tu·si
plural Tusi or Tusis also Tussi or Tussis or Tutsi or Tutsis
Definition of Tusi
: the ruling and cattle-owning class of the Rundi in Urundi in East Africa who presumably are cognate with the Hima people northward and whose extreme average height suggests an affinity with the Nilotes
— called also Watusi
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Merriam-Webster unabridged
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