The American Heritage® Dictionary of the English Language, 4th Edition
n. An aromatic annual plant (Salvia columbariae) in the mint family, native to Mexico and the southwest United States and having clusters of blue or violet flowers and edible seedlike fruits.
n. a Mexican plant, Salvia columbariae, related to mint; it has blue flowers and seeds from which an edible oil may be derived.
The Century Dictionary and Cyclopedia
n. The name among the Indians of Mexico and Arizona of several species of Salvia, especially S. Columbariæ, the seeds of which are used for making a pleasant mucilaginous drink, and also as food.
Word Usage
"Say the word chia, and most of us immediately think of little green pets."