pl. -·sas· or -·sa·
- a member of a North American Indian people now living in North Dakota; Gros Ventre (of the Missouri)
- the Siouan language of this people
Origin of Hidatsa; from Hidatsa hiratsa, willow wood lodge
nounpl. Hidatsa or Hi·dat·sas
- A member of a Native American people inhabiting an area along the Missouri River in western North Dakota.
- The Siouan language of this people. In both senses also called Gros Ventre.
Origin of HidatsaHidatsa hirá·ca (originally the name of the largest division of the Hidatsa people), of unknown origin (although traditionally thought to be derived from wirahacitatí, willow tree houses).