Source : Webster's Revised Unabridged Dictionary (1913)

Pintos \Pin"tos\, n. pl.; sing. {Pinto}. [Sp., painted,
   mottled.] (Eyhnol.)
   A mountain tribe of Mexican Indians living near Acapulco.
   They are remarkable for having the dark skin of the face
   irregularly spotted with white. Called also {speckled
   Indians}.