(c.1786–1812), Shoshone Indian guide and interpreter; also Sacagawea. She joined the Lewis and Clark expedition in what is now North Dakota and guided their travels through the wilderness and across the Rockies 1804–06.
from Hidatsa tsakaka-wia, literally 'bird-woman'
Sacajawea in other Oxford dictionaries
Definition of Sacajawea in the US English dictionary