Noun
A
member
of
a
Native American
tribe
,
also
known
as
the
Sioux
,
now
living
primarily
on
the
Rosebud
,
Pine
Ridge
,
Lower
Brule
,
Standing
Rock
and
Cheyenne
River
Reservations
.
Proper noun
The
language
spoken
by
the
Lakota
.