My mother ?s grandparents were from Sonora, Mexico. My mother used the word to refer to cred in the corner of your eye.
Synonyms of cuichi are legañas
Used in US as well
"Limpia el cuichi en tus ojos"
In South America it means Rainbow. Cuichi is the name of a Mexican population and a popular traditional dance of that same region, in the State of Sonora. It is one of the common names in Mexico overlooking the chachalaca, guacharata, monte hen. Its scientific name is Ortalis wagleri and belongs to the family Cracidae.