A spanish term meaning "Mixed Blood" usually. It refers to anyone who is Latin and some other ethnicity. It does NOT just refere to half mexican half Native American. It can be Mexican and Jewish, Argentinian and Russian and Mexican, African and Colubian and white. This word means Mixed blood in Spanish so you must be Latin and some other ethnicity to call yourself Los Mestizo. If you are a bunch of non-latin mixed races you would call yourself "Mixed Blood".
I am Half-Mexican, 1 quarter Spanish, 1 Quarter White, and some Native American.