from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A Native American people inhabiting the coastal area of California south of Los Angeles, associated during Spanish times with the missions of San Luis Rey and San Juan Capistrano.
- n. A member of this people.
- n. The Uto-Aztecan language of the Luiseño.
American Spanish, from San Luis Rey de Francia, a mission in southern California.(American Heritage® Dictionary of the English Language, Fourth Edition)